# systemd.index(7) - man - phpman

[SYSTEMD.INDEX(7)](https://www.chedong.com/phpMan.php/man/SYSTEMD.INDEX/7/markdown)                            systemd.index                           [SYSTEMD.INDEX(7)](https://www.chedong.com/phpMan.php/man/SYSTEMD.INDEX/7/markdown)



## NAME
       systemd.index - List all manpages from the systemd project

**3**
       [**30-systemd-environment-d-generator**(8)](https://www.chedong.com/phpMan.php/man/30-systemd-environment-d-generator/8/markdown) — Load variables specified by environment.d


**B**
       [**binfmt.d**(5)](https://www.chedong.com/phpMan.php/man/binfmt.d/5/markdown) — Configure additional binary formats for executables at boot
       [**bootctl**(1)](https://www.chedong.com/phpMan.php/man/bootctl/1/markdown) — Control EFI firmware boot settings and manage boot loader
       [**bootup**(7)](https://www.chedong.com/phpMan.php/man/bootup/7/markdown) — System bootup process
       [**busctl**(1)](https://www.chedong.com/phpMan.php/man/busctl/1/markdown) — Introspect the bus


**C**
       [**coredump.conf**(5)](https://www.chedong.com/phpMan.php/man/coredump.conf/5/markdown) — Core dump storage configuration files
       [**coredump.conf.d**(5)](https://www.chedong.com/phpMan.php/man/coredump.conf.d/5/markdown) — Core dump storage configuration files
       [**coredumpctl**(1)](https://www.chedong.com/phpMan.php/man/coredumpctl/1/markdown) — Retrieve and process saved core dumps and metadata
       [**crypttab**(5)](https://www.chedong.com/phpMan.php/man/crypttab/5/markdown) — Configuration for encrypted block devices


**D**
       [**daemon**(7)](https://www.chedong.com/phpMan.php/man/daemon/7/markdown) — Writing and packaging system daemons
       [**dnssec-trust-anchors.d**(5)](https://www.chedong.com/phpMan.php/man/dnssec-trust-anchors.d/5/markdown) — DNSSEC trust anchor configuration files


**E**
       [**environment.d**(5)](https://www.chedong.com/phpMan.php/man/environment.d/5/markdown) — Definition of user service environment


**F**
       [**file-hierarchy**(7)](https://www.chedong.com/phpMan.php/man/file-hierarchy/7/markdown) — File system hierarchy overview


**H**
       [**halt**(8)](https://www.chedong.com/phpMan.php/man/halt/8/markdown) — Halt, power-off or reboot the machine
       [**hostname**(5)](https://www.chedong.com/phpMan.php/man/hostname/5/markdown) — Local hostname configuration file
       [**hostnamectl**(1)](https://www.chedong.com/phpMan.php/man/hostnamectl/1/markdown) — Control the system hostname
       [**hwdb**(7)](https://www.chedong.com/phpMan.php/man/hwdb/7/markdown) — Hardware Database


**I**
       [**init**(1)](https://www.chedong.com/phpMan.php/man/init/1/markdown) — systemd system and service manager
       [**initrd-release**(5)](https://www.chedong.com/phpMan.php/man/initrd-release/5/markdown) — Operating system identification


**J**
       [**journal-remote.conf**(5)](https://www.chedong.com/phpMan.php/man/journal-remote.conf/5/markdown) — Configuration files for the service accepting remote journal uploads
       [**journal-remote.conf.d**(5)](https://www.chedong.com/phpMan.php/man/journal-remote.conf.d/5/markdown) — Configuration files for the service accepting remote journal
       uploads
       [**journal-upload.conf**(5)](https://www.chedong.com/phpMan.php/man/journal-upload.conf/5/markdown) — Configuration files for the journal upload service
       [**journal-upload.conf.d**(5)](https://www.chedong.com/phpMan.php/man/journal-upload.conf.d/5/markdown) — Configuration files for the journal upload service
       [**journalctl**(1)](https://www.chedong.com/phpMan.php/man/journalctl/1/markdown) — Query the systemd journal
       [**journald.conf**(5)](https://www.chedong.com/phpMan.php/man/journald.conf/5/markdown) — Journal service configuration files
       [**journald.conf.d**(5)](https://www.chedong.com/phpMan.php/man/journald.conf.d/5/markdown) — Journal service configuration files
       **journald@[.conf**(5)](https://www.chedong.com/phpMan.php/man/.conf/5/markdown) — Journal service configuration files


**K**
       [**kernel-command-line**(7)](https://www.chedong.com/phpMan.php/man/kernel-command-line/7/markdown) — Kernel command line parameters
       [**kernel-install**(8)](https://www.chedong.com/phpMan.php/man/kernel-install/8/markdown) — Add and remove kernel and initramfs images to and from /boot


**L**
       **libnss**___**[myhostname.so.2**(8)](https://www.chedong.com/phpMan.php/man/myhostname.so.2/8/markdown) — Hostname resolution for the locally configured system hostname
       **libnss**___**[mymachines.so.2**(8)](https://www.chedong.com/phpMan.php/man/mymachines.so.2/8/markdown) — Hostname resolution for local container instances
       **libnss**___**[resolve.so.2**(8)](https://www.chedong.com/phpMan.php/man/resolve.so.2/8/markdown) — Hostname resolution via systemd-resolved.service
       **libnss**___**[systemd.so.2**(8)](https://www.chedong.com/phpMan.php/man/systemd.so.2/8/markdown) — UNIX user and group name resolution for user/group lookup via
       Varlink
       [**libudev**(3)](https://www.chedong.com/phpMan.php/man/libudev/3/markdown) — API for enumerating and introspecting local devices
       [**loader.conf**(5)](https://www.chedong.com/phpMan.php/man/loader.conf/5/markdown) — Configuration file for systemd-boot
       [**locale.conf**(5)](https://www.chedong.com/phpMan.php/man/locale.conf/5/markdown) — Configuration file for locale settings
       [**localectl**(1)](https://www.chedong.com/phpMan.php/man/localectl/1/markdown) — Control the system locale and keyboard layout settings
       [**localtime**(5)](https://www.chedong.com/phpMan.php/man/localtime/5/markdown) — Local timezone configuration file
       [**loginctl**(1)](https://www.chedong.com/phpMan.php/man/loginctl/1/markdown) — Control the systemd login manager
       [**logind.conf**(5)](https://www.chedong.com/phpMan.php/man/logind.conf/5/markdown) — Login manager configuration files
       [**logind.conf.d**(5)](https://www.chedong.com/phpMan.php/man/logind.conf.d/5/markdown) — Login manager configuration files


**M**
       [**machine-id**(5)](https://www.chedong.com/phpMan.php/man/machine-id/5/markdown) — Local machine ID configuration file
       [**machine-info**(5)](https://www.chedong.com/phpMan.php/man/machine-info/5/markdown) — Local machine information file
       [**machinectl**(1)](https://www.chedong.com/phpMan.php/man/machinectl/1/markdown) — Control the systemd machine manager
       [**modules-load.d**(5)](https://www.chedong.com/phpMan.php/man/modules-load.d/5/markdown) — Configure kernel modules to load at boot


**N**
       [**networkctl**(1)](https://www.chedong.com/phpMan.php/man/networkctl/1/markdown) — Query the status of network links
       [**networkd.conf**(5)](https://www.chedong.com/phpMan.php/man/networkd.conf/5/markdown) — Global Network configuration files
       [**networkd.conf.d**(5)](https://www.chedong.com/phpMan.php/man/networkd.conf.d/5/markdown) — Global Network configuration files
       [**nss-myhostname**(8)](https://www.chedong.com/phpMan.php/man/nss-myhostname/8/markdown) — Hostname resolution for the locally configured system hostname
       [**nss-mymachines**(8)](https://www.chedong.com/phpMan.php/man/nss-mymachines/8/markdown) — Hostname resolution for local container instances
       [**nss-resolve**(8)](https://www.chedong.com/phpMan.php/man/nss-resolve/8/markdown) — Hostname resolution via systemd-resolved.service
       [**nss-systemd**(8)](https://www.chedong.com/phpMan.php/man/nss-systemd/8/markdown) — UNIX user and group name resolution for user/group lookup via Varlink


**O**
       [**oomctl**(1)](https://www.chedong.com/phpMan.php/man/oomctl/1/markdown) — Analyze the state stored in systemd-oomd
       [**oomd.conf**(5)](https://www.chedong.com/phpMan.php/man/oomd.conf/5/markdown) — Global systemd-oomd configuration files
       [**oomd.conf.d**(5)](https://www.chedong.com/phpMan.php/man/oomd.conf.d/5/markdown) — Global systemd-oomd configuration files
       [**org.freedesktop.hostname1**(5)](https://www.chedong.com/phpMan.php/man/org.freedesktop.hostname1/5/markdown) — The D-Bus interface of systemd-hostnamed
       [**org.freedesktop.import1**(5)](https://www.chedong.com/phpMan.php/man/org.freedesktop.import1/5/markdown) — The D-Bus interface of systemd-importd
       [**org.freedesktop.locale1**(5)](https://www.chedong.com/phpMan.php/man/org.freedesktop.locale1/5/markdown) — The D-Bus interface of systemd-localed
       [**org.freedesktop.LogControl1**(5)](https://www.chedong.com/phpMan.php/man/org.freedesktop.LogControl1/5/markdown) — D-Bus interface to query and set logging configuration
       [**org.freedesktop.login1**(5)](https://www.chedong.com/phpMan.php/man/org.freedesktop.login1/5/markdown) — The D-Bus interface of systemd-logind
       [**org.freedesktop.machine1**(5)](https://www.chedong.com/phpMan.php/man/org.freedesktop.machine1/5/markdown) — The D-Bus interface of systemd-machined
       [**org.freedesktop.oom1**(5)](https://www.chedong.com/phpMan.php/man/org.freedesktop.oom1/5/markdown) — The D-Bus interface of systemd-oomd
       [**org.freedesktop.portable1**(5)](https://www.chedong.com/phpMan.php/man/org.freedesktop.portable1/5/markdown) — The D-Bus interface of systemd-portabled
       [**org.freedesktop.resolve1**(5)](https://www.chedong.com/phpMan.php/man/org.freedesktop.resolve1/5/markdown) — The D-Bus interface of systemd-resolved
       [**org.freedesktop.systemd1**(5)](https://www.chedong.com/phpMan.php/man/org.freedesktop.systemd1/5/markdown) — The D-Bus interface of systemd
       [**org.freedesktop.timedate1**(5)](https://www.chedong.com/phpMan.php/man/org.freedesktop.timedate1/5/markdown) — The D-Bus interface of systemd-timedated
       [**os-release**(5)](https://www.chedong.com/phpMan.php/man/os-release/5/markdown) — Operating system identification


**P**
       **pam**___**[systemd**(8)](https://www.chedong.com/phpMan.php/man/systemd/8/markdown) — Register user sessions in the systemd login manager
       [**portablectl**(1)](https://www.chedong.com/phpMan.php/man/portablectl/1/markdown) — Attach, detach or inspect portable service images
       [**poweroff**(8)](https://www.chedong.com/phpMan.php/man/poweroff/8/markdown) — Halt, power-off or reboot the machine
       [**pstore.conf**(5)](https://www.chedong.com/phpMan.php/man/pstore.conf/5/markdown) — PStore configuration file
       [**pstore.conf.d**(5)](https://www.chedong.com/phpMan.php/man/pstore.conf.d/5/markdown) — PStore configuration file


**R**
       [**rc-local.service**(8)](https://www.chedong.com/phpMan.php/man/rc-local.service/8/markdown) — Compatibility generator and service to start /etc/rc.local during boot
       [**reboot**(8)](https://www.chedong.com/phpMan.php/man/reboot/8/markdown) — Halt, power-off or reboot the machine
       [**repart.d**(5)](https://www.chedong.com/phpMan.php/man/repart.d/5/markdown) — Partition Definition Files for Automatic Boot-Time Repartitioning
       [**resolvconf**(1)](https://www.chedong.com/phpMan.php/man/resolvconf/1/markdown) — Resolve domain names, IPV4 and IPv6 addresses, DNS resource records, and
       services; introspect and reconfigure the DNS resolver
       [**resolvectl**(1)](https://www.chedong.com/phpMan.php/man/resolvectl/1/markdown) — Resolve domain names, IPV4 and IPv6 addresses, DNS resource records, and
       services; introspect and reconfigure the DNS resolver
       [**resolved.conf**(5)](https://www.chedong.com/phpMan.php/man/resolved.conf/5/markdown) — Network Name Resolution configuration files
       [**resolved.conf.d**(5)](https://www.chedong.com/phpMan.php/man/resolved.conf.d/5/markdown) — Network Name Resolution configuration files
       [**runlevel**(8)](https://www.chedong.com/phpMan.php/man/runlevel/8/markdown) — Print previous and current SysV runlevel


**S**
       [**sd-boot**(7)](https://www.chedong.com/phpMan.php/man/sd-boot/7/markdown) — A simple UEFI boot manager
       [**sd-bus**(3)](https://www.chedong.com/phpMan.php/man/sd-bus/3/markdown) — A lightweight D-Bus IPC client library
       [**sd-bus-errors**(3)](https://www.chedong.com/phpMan.php/man/sd-bus-errors/3/markdown) — Standard D-Bus error names
       [**sd-daemon**(3)](https://www.chedong.com/phpMan.php/man/sd-daemon/3/markdown) — APIs for new-style daemons
       [**sd-event**(3)](https://www.chedong.com/phpMan.php/man/sd-event/3/markdown) — A generic event loop implementation
       [**sd-hwdb**(3)](https://www.chedong.com/phpMan.php/man/sd-hwdb/3/markdown) — Read-only access to the hardware description database
       [**sd-id128**(3)](https://www.chedong.com/phpMan.php/man/sd-id128/3/markdown) — APIs for processing 128-bit IDs
       [**sd-journal**(3)](https://www.chedong.com/phpMan.php/man/sd-journal/3/markdown) — APIs for submitting and querying log entries to and from the journal
       [**sd-login**(3)](https://www.chedong.com/phpMan.php/man/sd-login/3/markdown) — APIs for tracking logins
       **SD**___**[ALERT**(3)](https://www.chedong.com/phpMan.php/man/ALERT/3/markdown) — APIs for new-style daemons
       **sd**___**[booted**(3)](https://www.chedong.com/phpMan.php/man/booted/3/markdown) — Test whether the system is running the systemd init system
       **sd**___**bus**___**add**___**[fallback**(3)](https://www.chedong.com/phpMan.php/man/fallback/3/markdown) — Declare properties and methods for a D-Bus path
       **sd**___**bus**___**add**___**fallback**___**[vtable**(3)](https://www.chedong.com/phpMan.php/man/vtable/3/markdown) — Declare properties and methods for a D-Bus path
       **sd**___**bus**___**add**___**[filter**(3)](https://www.chedong.com/phpMan.php/man/filter/3/markdown) — Declare properties and methods for a D-Bus path
       **sd**___**bus**___**add**___**[match**(3)](https://www.chedong.com/phpMan.php/man/match/3/markdown) — Add a match rule for incoming message dispatching
       **sd**___**bus**___**add**___**match**___**[async**(3)](https://www.chedong.com/phpMan.php/man/async/3/markdown) — Add a match rule for incoming message dispatching
       **sd**___**bus**___**add**___**node**___**[enumerator**(3)](https://www.chedong.com/phpMan.php/man/enumerator/3/markdown) — Add a node enumerator for a D-Bus object path prefix
       **sd**___**bus**___**add**___**[object**(3)](https://www.chedong.com/phpMan.php/man/object/3/markdown) — Declare properties and methods for a D-Bus path
       **sd**___**bus**___**add**___**object**___**[manager**(3)](https://www.chedong.com/phpMan.php/man/manager/3/markdown) — Add a D-Bus object manager for a D-Bus object sub-tree
       **sd**___**bus**___**add**___**object**___**[vtable**(3)](https://www.chedong.com/phpMan.php/man/vtable/3/markdown) — Declare properties and methods for a D-Bus path
       **sd**___**bus**___**attach**___**[event**(3)](https://www.chedong.com/phpMan.php/man/event/3/markdown) — Attach a bus connection object to an event loop
       **sd**___**bus**___**[call**(3)](https://www.chedong.com/phpMan.php/man/call/3/markdown) — Invoke a D-Bus method call
       **sd**___**bus**___**call**___**[async**(3)](https://www.chedong.com/phpMan.php/man/async/3/markdown) — Invoke a D-Bus method call
       **sd**___**bus**___**call**___**[method**(3)](https://www.chedong.com/phpMan.php/man/method/3/markdown) — Initialize a bus message object and invoke the corresponding D-Bus
       method call
       **sd**___**bus**___**call**___**method**___**[async**(3)](https://www.chedong.com/phpMan.php/man/async/3/markdown) — Initialize a bus message object and invoke the corresponding
       D-Bus method call
       **sd**___**bus**___**call**___**method**___**[asyncv**(3)](https://www.chedong.com/phpMan.php/man/asyncv/3/markdown) — Initialize a bus message object and invoke the corresponding
       D-Bus method call
       **sd**___**bus**___**call**___**[methodv**(3)](https://www.chedong.com/phpMan.php/man/methodv/3/markdown) — Initialize a bus message object and invoke the corresponding D-Bus
       method call
       **sd**___**bus**___**can**___**[send**(3)](https://www.chedong.com/phpMan.php/man/send/3/markdown) — Check which types can be sent over a bus object
       **sd**___**bus**___**[close**(3)](https://www.chedong.com/phpMan.php/man/close/3/markdown) — Close and flush a bus connection
       **sd**___**bus**___**close**___**[unref**(3)](https://www.chedong.com/phpMan.php/man/unref/3/markdown) — Create a new bus object and create or destroy references to it
       **sd**___**bus**___**close**___**[unrefp**(3)](https://www.chedong.com/phpMan.php/man/unrefp/3/markdown) — Create a new bus object and create or destroy references to it
       **sd**___**bus**___**creds**___**get**___**audit**___**login**___**[uid**(3)](https://www.chedong.com/phpMan.php/man/uid/3/markdown) — Retrieve fields from a credentials object
       **sd**___**bus**___**creds**___**get**___**audit**___**session**___**[id**(3)](https://www.chedong.com/phpMan.php/man/id/3/markdown) — Retrieve fields from a credentials object
       **sd**___**bus**___**creds**___**get**___**augmented**___**[mask**(3)](https://www.chedong.com/phpMan.php/man/mask/3/markdown) — Retrieve credentials object for the specified PID
       **sd**___**bus**___**creds**___**get**___**[cgroup**(3)](https://www.chedong.com/phpMan.php/man/cgroup/3/markdown) — Retrieve fields from a credentials object
       **sd**___**bus**___**creds**___**get**___**[cmdline**(3)](https://www.chedong.com/phpMan.php/man/cmdline/3/markdown) — Retrieve fields from a credentials object
       **sd**___**bus**___**creds**___**get**___**[comm**(3)](https://www.chedong.com/phpMan.php/man/comm/3/markdown) — Retrieve fields from a credentials object
       **sd**___**bus**___**creds**___**get**___**[description**(3)](https://www.chedong.com/phpMan.php/man/description/3/markdown) — Retrieve fields from a credentials object
       **sd**___**bus**___**creds**___**get**___**[egid**(3)](https://www.chedong.com/phpMan.php/man/egid/3/markdown) — Retrieve fields from a credentials object
       **sd**___**bus**___**creds**___**get**___**[euid**(3)](https://www.chedong.com/phpMan.php/man/euid/3/markdown) — Retrieve fields from a credentials object
       **sd**___**bus**___**creds**___**get**___**[exe**(3)](https://www.chedong.com/phpMan.php/man/exe/3/markdown) — Retrieve fields from a credentials object
       **sd**___**bus**___**creds**___**get**___**[fsgid**(3)](https://www.chedong.com/phpMan.php/man/fsgid/3/markdown) — Retrieve fields from a credentials object
       **sd**___**bus**___**creds**___**get**___**[fsuid**(3)](https://www.chedong.com/phpMan.php/man/fsuid/3/markdown) — Retrieve fields from a credentials object
       **sd**___**bus**___**creds**___**get**___**[gid**(3)](https://www.chedong.com/phpMan.php/man/gid/3/markdown) — Retrieve fields from a credentials object
       **sd**___**bus**___**creds**___**get**___**[mask**(3)](https://www.chedong.com/phpMan.php/man/mask/3/markdown) — Retrieve credentials object for the specified PID
       **sd**___**bus**___**creds**___**get**___**owner**___**[uid**(3)](https://www.chedong.com/phpMan.php/man/uid/3/markdown) — Retrieve fields from a credentials object
       **sd**___**bus**___**creds**___**get**___**[pid**(3)](https://www.chedong.com/phpMan.php/man/pid/3/markdown) — Retrieve fields from a credentials object
       **sd**___**bus**___**creds**___**get**___**[ppid**(3)](https://www.chedong.com/phpMan.php/man/ppid/3/markdown) — Retrieve fields from a credentials object
       **sd**___**bus**___**creds**___**get**___**selinux**___**[context**(3)](https://www.chedong.com/phpMan.php/man/context/3/markdown) — Retrieve fields from a credentials object
       **sd**___**bus**___**creds**___**get**___**[session**(3)](https://www.chedong.com/phpMan.php/man/session/3/markdown) — Retrieve fields from a credentials object
       **sd**___**bus**___**creds**___**get**___**[sgid**(3)](https://www.chedong.com/phpMan.php/man/sgid/3/markdown) — Retrieve fields from a credentials object
       **sd**___**bus**___**creds**___**get**___**[slice**(3)](https://www.chedong.com/phpMan.php/man/slice/3/markdown) — Retrieve fields from a credentials object
       **sd**___**bus**___**creds**___**get**___**[suid**(3)](https://www.chedong.com/phpMan.php/man/suid/3/markdown) — Retrieve fields from a credentials object
       **sd**___**bus**___**creds**___**get**___**supplementary**___**[gids**(3)](https://www.chedong.com/phpMan.php/man/gids/3/markdown) — Retrieve fields from a credentials object
       **sd**___**bus**___**creds**___**get**___**[tid**(3)](https://www.chedong.com/phpMan.php/man/tid/3/markdown) — Retrieve fields from a credentials object
       **sd**___**bus**___**creds**___**get**___**tid**___**[comm**(3)](https://www.chedong.com/phpMan.php/man/comm/3/markdown) — Retrieve fields from a credentials object
       **sd**___**bus**___**creds**___**get**___**[tty**(3)](https://www.chedong.com/phpMan.php/man/tty/3/markdown) — Retrieve fields from a credentials object
       **sd**___**bus**___**creds**___**get**___**[uid**(3)](https://www.chedong.com/phpMan.php/man/uid/3/markdown) — Retrieve fields from a credentials object
       **sd**___**bus**___**creds**___**get**___**unique**___**[name**(3)](https://www.chedong.com/phpMan.php/man/name/3/markdown) — Retrieve fields from a credentials object
       **sd**___**bus**___**creds**___**get**___**[unit**(3)](https://www.chedong.com/phpMan.php/man/unit/3/markdown) — Retrieve fields from a credentials object
       **sd**___**bus**___**creds**___**get**___**user**___**[slice**(3)](https://www.chedong.com/phpMan.php/man/slice/3/markdown) — Retrieve fields from a credentials object
       **sd**___**bus**___**creds**___**get**___**user**___**[unit**(3)](https://www.chedong.com/phpMan.php/man/unit/3/markdown) — Retrieve fields from a credentials object
       **sd**___**bus**___**creds**___**get**___**well**___**known**___**[names**(3)](https://www.chedong.com/phpMan.php/man/names/3/markdown) — Retrieve fields from a credentials object
       **sd**___**bus**___**creds**___**has**___**bounding**___**[cap**(3)](https://www.chedong.com/phpMan.php/man/cap/3/markdown) — Retrieve fields from a credentials object
       **sd**___**bus**___**creds**___**has**___**effective**___**[cap**(3)](https://www.chedong.com/phpMan.php/man/cap/3/markdown) — Retrieve fields from a credentials object
       **sd**___**bus**___**creds**___**has**___**inheritable**___**[cap**(3)](https://www.chedong.com/phpMan.php/man/cap/3/markdown) — Retrieve fields from a credentials object
       **sd**___**bus**___**creds**___**has**___**permitted**___**[cap**(3)](https://www.chedong.com/phpMan.php/man/cap/3/markdown) — Retrieve fields from a credentials object
       **sd**___**bus**___**creds**___**new**___**from**___**[pid**(3)](https://www.chedong.com/phpMan.php/man/pid/3/markdown) — Retrieve credentials object for the specified PID
       **sd**___**bus**___**creds**___**[ref**(3)](https://www.chedong.com/phpMan.php/man/ref/3/markdown) — Retrieve credentials object for the specified PID
       **sd**___**bus**___**creds**___**[unref**(3)](https://www.chedong.com/phpMan.php/man/unref/3/markdown) — Retrieve credentials object for the specified PID
       **sd**___**bus**___**creds**___**[unrefp**(3)](https://www.chedong.com/phpMan.php/man/unrefp/3/markdown) — Retrieve credentials object for the specified PID
       **sd**___**bus**___**[default**(3)](https://www.chedong.com/phpMan.php/man/default/3/markdown) — Acquire a connection to a system or user bus
       **sd**___**bus**___**default**___**flush**___**[close**(3)](https://www.chedong.com/phpMan.php/man/close/3/markdown) — Close and flush a bus connection
       **sd**___**bus**___**default**___**[system**(3)](https://www.chedong.com/phpMan.php/man/system/3/markdown) — Acquire a connection to a system or user bus
       **sd**___**bus**___**default**___**[user**(3)](https://www.chedong.com/phpMan.php/man/user/3/markdown) — Acquire a connection to a system or user bus
       **sd**___**bus**___**destroy**___**[t**(3)](https://www.chedong.com/phpMan.php/man/t/3/markdown) — Define the callback function for resource cleanup
       **sd**___**bus**___**detach**___**[event**(3)](https://www.chedong.com/phpMan.php/man/event/3/markdown) — Attach a bus connection object to an event loop
       **sd**___**bus**___**emit**___**interfaces**___**[added**(3)](https://www.chedong.com/phpMan.php/man/added/3/markdown) — Convenience functions for emitting (standard) D-Bus signals
       **sd**___**bus**___**emit**___**interfaces**___**added**___**[strv**(3)](https://www.chedong.com/phpMan.php/man/strv/3/markdown) — Convenience functions for emitting (standard) D-Bus
       signals
       **sd**___**bus**___**emit**___**interfaces**___**[removed**(3)](https://www.chedong.com/phpMan.php/man/removed/3/markdown) — Convenience functions for emitting (standard) D-Bus
       signals
       **sd**___**bus**___**emit**___**interfaces**___**removed**___**[strv**(3)](https://www.chedong.com/phpMan.php/man/strv/3/markdown) — Convenience functions for emitting (standard) D-Bus
       signals
       **sd**___**bus**___**emit**___**object**___**[added**(3)](https://www.chedong.com/phpMan.php/man/added/3/markdown) — Convenience functions for emitting (standard) D-Bus signals
       **sd**___**bus**___**emit**___**object**___**[removed**(3)](https://www.chedong.com/phpMan.php/man/removed/3/markdown) — Convenience functions for emitting (standard) D-Bus signals
       **sd**___**bus**___**emit**___**properties**___**[changed**(3)](https://www.chedong.com/phpMan.php/man/changed/3/markdown) — Convenience functions for emitting (standard) D-Bus
       signals
       **sd**___**bus**___**emit**___**properties**___**changed**___**[strv**(3)](https://www.chedong.com/phpMan.php/man/strv/3/markdown) — Convenience functions for emitting (standard) D-Bus
       signals
       **sd**___**bus**___**emit**___**[signal**(3)](https://www.chedong.com/phpMan.php/man/signal/3/markdown) — Convenience functions for emitting (standard) D-Bus signals
       **sd**___**bus**___**emit**___**[signalv**(3)](https://www.chedong.com/phpMan.php/man/signalv/3/markdown) — Convenience functions for emitting (standard) D-Bus signals
       **sd**___**bus**___**enqueue**___**for**___**[read**(3)](https://www.chedong.com/phpMan.php/man/read/3/markdown) — Re-enqueue a bus message on a bus connection, for reading
       **sd**___**bus**___**[error**(3)](https://www.chedong.com/phpMan.php/man/error/3/markdown) — sd-bus error handling
       **SD**___**BUS**___**ERROR**___**ACCESS**___**[DENIED**(3)](https://www.chedong.com/phpMan.php/man/DENIED/3/markdown) — Standard D-Bus error names
       **sd**___**bus**___**error**___**add**___**[map**(3)](https://www.chedong.com/phpMan.php/man/map/3/markdown) — Additional sd-dbus error mappings
       **SD**___**BUS**___**ERROR**___**ADDRESS**___**IN**___**[USE**(3)](https://www.chedong.com/phpMan.php/man/USE/3/markdown) — Standard D-Bus error names
       **SD**___**BUS**___**ERROR**___**AUTH**___**[FAILED**(3)](https://www.chedong.com/phpMan.php/man/FAILED/3/markdown) — Standard D-Bus error names
       **SD**___**BUS**___**ERROR**___**BAD**___**[ADDRESS**(3)](https://www.chedong.com/phpMan.php/man/ADDRESS/3/markdown) — Standard D-Bus error names
       **sd**___**bus**___**error**___**[copy**(3)](https://www.chedong.com/phpMan.php/man/copy/3/markdown) — sd-bus error handling
       **SD**___**BUS**___**ERROR**___**[DISCONNECTED**(3)](https://www.chedong.com/phpMan.php/man/DISCONNECTED/3/markdown) — Standard D-Bus error names
       **SD**___**BUS**___**ERROR**___**[END**(3)](https://www.chedong.com/phpMan.php/man/END/3/markdown) — Additional sd-dbus error mappings
       **SD**___**BUS**___**ERROR**___**[FAILED**(3)](https://www.chedong.com/phpMan.php/man/FAILED/3/markdown) — Standard D-Bus error names
       **SD**___**BUS**___**ERROR**___**FILE**___**[EXISTS**(3)](https://www.chedong.com/phpMan.php/man/EXISTS/3/markdown) — Standard D-Bus error names
       **SD**___**BUS**___**ERROR**___**FILE**___**NOT**___**[FOUND**(3)](https://www.chedong.com/phpMan.php/man/FOUND/3/markdown) — Standard D-Bus error names
       **sd**___**bus**___**error**___**[free**(3)](https://www.chedong.com/phpMan.php/man/free/3/markdown) — sd-bus error handling
       **sd**___**bus**___**error**___**get**___**[errno**(3)](https://www.chedong.com/phpMan.php/man/errno/3/markdown) — sd-bus error handling
       **sd**___**bus**___**error**___**has**___**[name**(3)](https://www.chedong.com/phpMan.php/man/name/3/markdown) — sd-bus error handling
       **sd**___**bus**___**error**___**has**___**[names**(3)](https://www.chedong.com/phpMan.php/man/names/3/markdown) — sd-bus error handling
       **sd**___**bus**___**error**___**has**___**names**___**[sentinel**(3)](https://www.chedong.com/phpMan.php/man/sentinel/3/markdown) — sd-bus error handling
       **SD**___**BUS**___**ERROR**___**INCONSISTENT**___**[MESSAGE**(3)](https://www.chedong.com/phpMan.php/man/MESSAGE/3/markdown) — Standard D-Bus error names
       **SD**___**BUS**___**ERROR**___**INTERACTIVE**___**AUTHORIZATION**___**[REQUIRED**(3)](https://www.chedong.com/phpMan.php/man/REQUIRED/3/markdown) — Standard D-Bus error names
       **SD**___**BUS**___**ERROR**___**INVALID**___**[ARGS**(3)](https://www.chedong.com/phpMan.php/man/ARGS/3/markdown) — Standard D-Bus error names
       **SD**___**BUS**___**ERROR**___**INVALID**___**[SIGNATURE**(3)](https://www.chedong.com/phpMan.php/man/SIGNATURE/3/markdown) — Standard D-Bus error names
       **SD**___**BUS**___**ERROR**___**IO**___**[ERROR**(3)](https://www.chedong.com/phpMan.php/man/ERROR/3/markdown) — Standard D-Bus error names
       **sd**___**bus**___**error**___**is**___**[set**(3)](https://www.chedong.com/phpMan.php/man/set/3/markdown) — sd-bus error handling
       **SD**___**BUS**___**ERROR**___**LIMITS**___**[EXCEEDED**(3)](https://www.chedong.com/phpMan.php/man/EXCEEDED/3/markdown) — Standard D-Bus error names
       **SD**___**BUS**___**ERROR**___**MAKE**___**[CONST**(3)](https://www.chedong.com/phpMan.php/man/CONST/3/markdown) — sd-bus error handling
       **sd**___**bus**___**error**___**[map**(3)](https://www.chedong.com/phpMan.php/man/map/3/markdown) — Additional sd-dbus error mappings
       **SD**___**BUS**___**ERROR**___**[MAP**(3)](https://www.chedong.com/phpMan.php/man/MAP/3/markdown) — Additional sd-dbus error mappings
       **SD**___**BUS**___**ERROR**___**MATCH**___**RULE**___**[INVALID**(3)](https://www.chedong.com/phpMan.php/man/INVALID/3/markdown) — Standard D-Bus error names
       **SD**___**BUS**___**ERROR**___**MATCH**___**RULE**___**NOT**___**[FOUND**(3)](https://www.chedong.com/phpMan.php/man/FOUND/3/markdown) — Standard D-Bus error names
       **sd**___**bus**___**error**___**[move**(3)](https://www.chedong.com/phpMan.php/man/move/3/markdown) — sd-bus error handling
       **SD**___**BUS**___**ERROR**___**NAME**___**HAS**___**NO**___**[OWNER**(3)](https://www.chedong.com/phpMan.php/man/OWNER/3/markdown) — Standard D-Bus error names
       **SD**___**BUS**___**ERROR**___**NO**___**[MEMORY**(3)](https://www.chedong.com/phpMan.php/man/MEMORY/3/markdown) — Standard D-Bus error names
       **SD**___**BUS**___**ERROR**___**NO**___**[NETWORK**(3)](https://www.chedong.com/phpMan.php/man/NETWORK/3/markdown) — Standard D-Bus error names
       **SD**___**BUS**___**ERROR**___**NO**___**[REPLY**(3)](https://www.chedong.com/phpMan.php/man/REPLY/3/markdown) — Standard D-Bus error names
       **SD**___**BUS**___**ERROR**___**NO**___**[SERVER**(3)](https://www.chedong.com/phpMan.php/man/SERVER/3/markdown) — Standard D-Bus error names
       **SD**___**BUS**___**ERROR**___**NOT**___**[SUPPORTED**(3)](https://www.chedong.com/phpMan.php/man/SUPPORTED/3/markdown) — Standard D-Bus error names
       **SD**___**BUS**___**ERROR**___**[NULL**(3)](https://www.chedong.com/phpMan.php/man/NULL/3/markdown) — sd-bus error handling
       **SD**___**BUS**___**ERROR**___**PROPERTY**___**READ**___**[ONLY**(3)](https://www.chedong.com/phpMan.php/man/ONLY/3/markdown) — Standard D-Bus error names
       **SD**___**BUS**___**ERROR**___**SERVICE**___**[UNKNOWN**(3)](https://www.chedong.com/phpMan.php/man/UNKNOWN/3/markdown) — Standard D-Bus error names
       **sd**___**bus**___**error**___**[set**(3)](https://www.chedong.com/phpMan.php/man/set/3/markdown) — sd-bus error handling
       **sd**___**bus**___**error**___**set**___**[const**(3)](https://www.chedong.com/phpMan.php/man/const/3/markdown) — sd-bus error handling
       **sd**___**bus**___**error**___**set**___**[errno**(3)](https://www.chedong.com/phpMan.php/man/errno/3/markdown) — sd-bus error handling
       **sd**___**bus**___**error**___**set**___**[errnof**(3)](https://www.chedong.com/phpMan.php/man/errnof/3/markdown) — sd-bus error handling
       **sd**___**bus**___**error**___**set**___**[errnofv**(3)](https://www.chedong.com/phpMan.php/man/errnofv/3/markdown) — sd-bus error handling
       **sd**___**bus**___**error**___**[setf**(3)](https://www.chedong.com/phpMan.php/man/setf/3/markdown) — sd-bus error handling
       **SD**___**BUS**___**ERROR**___**[TIMEOUT**(3)](https://www.chedong.com/phpMan.php/man/TIMEOUT/3/markdown) — Standard D-Bus error names
       **SD**___**BUS**___**ERROR**___**UNIX**___**PROCESS**___**ID**___**[UNKNOWN**(3)](https://www.chedong.com/phpMan.php/man/UNKNOWN/3/markdown) — Standard D-Bus error names
       **SD**___**BUS**___**ERROR**___**UNKNOWN**___**[INTERFACE**(3)](https://www.chedong.com/phpMan.php/man/INTERFACE/3/markdown) — Standard D-Bus error names
       **SD**___**BUS**___**ERROR**___**UNKNOWN**___**[METHOD**(3)](https://www.chedong.com/phpMan.php/man/METHOD/3/markdown) — Standard D-Bus error names
       **SD**___**BUS**___**ERROR**___**UNKNOWN**___**[OBJECT**(3)](https://www.chedong.com/phpMan.php/man/OBJECT/3/markdown) — Standard D-Bus error names
       **SD**___**BUS**___**ERROR**___**UNKNOWN**___**[PROPERTY**(3)](https://www.chedong.com/phpMan.php/man/PROPERTY/3/markdown) — Standard D-Bus error names
       **sd**___**bus**___**[flush**(3)](https://www.chedong.com/phpMan.php/man/flush/3/markdown) — Close and flush a bus connection
       **sd**___**bus**___**flush**___**close**___**[unref**(3)](https://www.chedong.com/phpMan.php/man/unref/3/markdown) — Create a new bus object and create or destroy references to it
       **sd**___**bus**___**flush**___**close**___**[unrefp**(3)](https://www.chedong.com/phpMan.php/man/unrefp/3/markdown) — Create a new bus object and create or destroy references to it
       **sd**___**bus**___**get**___**[address**(3)](https://www.chedong.com/phpMan.php/man/address/3/markdown) — Set or query the address of the bus connection
       **sd**___**bus**___**get**___**allow**___**interactive**___**[authorization**(3)](https://www.chedong.com/phpMan.php/man/authorization/3/markdown) — Set or query properties of a bus object
       **sd**___**bus**___**get**___**bus**___**[id**(3)](https://www.chedong.com/phpMan.php/man/id/3/markdown) — Configure connection mode for a bus object
       **sd**___**bus**___**get**___**close**___**on**___**[exit**(3)](https://www.chedong.com/phpMan.php/man/exit/3/markdown) — Control whether to close the bus connection during the event
       loop exit phase
       **sd**___**bus**___**get**___**connected**___**[signal**(3)](https://www.chedong.com/phpMan.php/man/signal/3/markdown) — Control emission of local connection establishment signal on
       bus connections
       **sd**___**bus**___**get**___**creds**___**[mask**(3)](https://www.chedong.com/phpMan.php/man/mask/3/markdown) — Control feature negotiation on bus connections
       **sd**___**bus**___**get**___**current**___**[handler**(3)](https://www.chedong.com/phpMan.php/man/handler/3/markdown) — Query information of the callback a bus object is currently
       running
       **sd**___**bus**___**get**___**current**___**[message**(3)](https://www.chedong.com/phpMan.php/man/message/3/markdown) — Query information of the callback a bus object is currently
       running
       **sd**___**bus**___**get**___**current**___**[slot**(3)](https://www.chedong.com/phpMan.php/man/slot/3/markdown) — Query information of the callback a bus object is currently
       running
       **sd**___**bus**___**get**___**current**___**[userdata**(3)](https://www.chedong.com/phpMan.php/man/userdata/3/markdown) — Query information of the callback a bus object is currently
       running
       **sd**___**bus**___**get**___**[description**(3)](https://www.chedong.com/phpMan.php/man/description/3/markdown) — Set or query properties of a bus object
       **sd**___**bus**___**get**___**[event**(3)](https://www.chedong.com/phpMan.php/man/event/3/markdown) — Attach a bus connection object to an event loop
       **sd**___**bus**___**get**___**[events**(3)](https://www.chedong.com/phpMan.php/man/events/3/markdown) — Get the file descriptor, I/O events and timeout to wait for from a
       message bus object
       **sd**___**bus**___**get**___**exit**___**on**___**[disconnect**(3)](https://www.chedong.com/phpMan.php/man/disconnect/3/markdown) — Control the exit behavior when the bus object disconnects
       **sd**___**bus**___**get**___**[fd**(3)](https://www.chedong.com/phpMan.php/man/fd/3/markdown) — Get the file descriptor, I/O events and timeout to wait for from a message
       bus object
       **sd**___**bus**___**get**___**method**___**call**___**[timeout**(3)](https://www.chedong.com/phpMan.php/man/timeout/3/markdown) — Set or query the default D-Bus method call timeout of a
       bus object
       **sd**___**bus**___**get**___**n**___**queued**___**[read**(3)](https://www.chedong.com/phpMan.php/man/read/3/markdown) — Get the number of pending bus messages in the read and write
       queues of a bus connection object
       **sd**___**bus**___**get**___**n**___**queued**___**[write**(3)](https://www.chedong.com/phpMan.php/man/write/3/markdown) — Get the number of pending bus messages in the read and write
       queues of a bus connection object
       **sd**___**bus**___**get**___**name**___**[creds**(3)](https://www.chedong.com/phpMan.php/man/creds/3/markdown) — Query bus client credentials
       **sd**___**bus**___**get**___**name**___**machine**___**[id**(3)](https://www.chedong.com/phpMan.php/man/id/3/markdown) — Retrieve a bus client's machine identity
       **sd**___**bus**___**get**___**owner**___**[creds**(3)](https://www.chedong.com/phpMan.php/man/creds/3/markdown) — Query bus client credentials
       **sd**___**bus**___**get**___**[property**(3)](https://www.chedong.com/phpMan.php/man/property/3/markdown) — Set or query D-Bus service properties
       **sd**___**bus**___**get**___**property**___**[string**(3)](https://www.chedong.com/phpMan.php/man/string/3/markdown) — Set or query D-Bus service properties
       **sd**___**bus**___**get**___**property**___**[strv**(3)](https://www.chedong.com/phpMan.php/man/strv/3/markdown) — Set or query D-Bus service properties
       **sd**___**bus**___**get**___**property**___**[trivial**(3)](https://www.chedong.com/phpMan.php/man/trivial/3/markdown) — Set or query D-Bus service properties
       **sd**___**bus**___**get**___**[scope**(3)](https://www.chedong.com/phpMan.php/man/scope/3/markdown) — Set or query properties of a bus object
       **sd**___**bus**___**get**___**[sender**(3)](https://www.chedong.com/phpMan.php/man/sender/3/markdown) — Configure default sender for outgoing messages
       **sd**___**bus**___**get**___**[tid**(3)](https://www.chedong.com/phpMan.php/man/tid/3/markdown) — Set or query properties of a bus object
       **sd**___**bus**___**get**___**[timeout**(3)](https://www.chedong.com/phpMan.php/man/timeout/3/markdown) — Get the file descriptor, I/O events and timeout to wait for from a
       message bus object
       **sd**___**bus**___**get**___**unique**___**[name**(3)](https://www.chedong.com/phpMan.php/man/name/3/markdown) — Set or query properties of a bus object
       **sd**___**bus**___**get**___**watch**___**[bind**(3)](https://www.chedong.com/phpMan.php/man/bind/3/markdown) — Control socket binding watching on bus connections
       **sd**___**bus**___**interface**___**name**___**is**___**[valid**(3)](https://www.chedong.com/phpMan.php/man/valid/3/markdown) — Check if a string is a valid bus name or object path
       **sd**___**bus**___**is**___**[anonymous**(3)](https://www.chedong.com/phpMan.php/man/anonymous/3/markdown) — Set or query properties of a bus object
       **sd**___**bus**___**is**___**bus**___**[client**(3)](https://www.chedong.com/phpMan.php/man/client/3/markdown) — Configure connection mode for a bus object
       **sd**___**bus**___**is**___**[monitor**(3)](https://www.chedong.com/phpMan.php/man/monitor/3/markdown) — Configure connection mode for a bus object
       **sd**___**bus**___**is**___**[open**(3)](https://www.chedong.com/phpMan.php/man/open/3/markdown) — Check whether the bus connection is open or ready
       **sd**___**bus**___**is**___**[ready**(3)](https://www.chedong.com/phpMan.php/man/ready/3/markdown) — Check whether the bus connection is open or ready
       **sd**___**bus**___**is**___**[server**(3)](https://www.chedong.com/phpMan.php/man/server/3/markdown) — Configure connection mode for a bus object
       **sd**___**bus**___**is**___**[trusted**(3)](https://www.chedong.com/phpMan.php/man/trusted/3/markdown) — Set or query properties of a bus object
       **sd**___**bus**___**list**___**[names**(3)](https://www.chedong.com/phpMan.php/man/names/3/markdown) — Retrieve information about registered names on a bus
       **sd**___**bus**___**match**___**[signal**(3)](https://www.chedong.com/phpMan.php/man/signal/3/markdown) — Add a match rule for incoming message dispatching
       **sd**___**bus**___**match**___**signal**___**[async**(3)](https://www.chedong.com/phpMan.php/man/async/3/markdown) — Add a match rule for incoming message dispatching
       **sd**___**bus**___**member**___**name**___**is**___**[valid**(3)](https://www.chedong.com/phpMan.php/man/valid/3/markdown) — Check if a string is a valid bus name or object path
       **sd**___**bus**___**message**___**[append**(3)](https://www.chedong.com/phpMan.php/man/append/3/markdown) — Attach fields to a D-Bus message based on a type string
       **sd**___**bus**___**message**___**append**___**[array**(3)](https://www.chedong.com/phpMan.php/man/array/3/markdown) — Append an array of fields to a D-Bus message
       **sd**___**bus**___**message**___**append**___**array**___**[iovec**(3)](https://www.chedong.com/phpMan.php/man/iovec/3/markdown) — Append an array of fields to a D-Bus message
       **sd**___**bus**___**message**___**append**___**array**___**[memfd**(3)](https://www.chedong.com/phpMan.php/man/memfd/3/markdown) — Append an array of fields to a D-Bus message
       **sd**___**bus**___**message**___**append**___**array**___**[space**(3)](https://www.chedong.com/phpMan.php/man/space/3/markdown) — Append an array of fields to a D-Bus message
       **sd**___**bus**___**message**___**append**___**[basic**(3)](https://www.chedong.com/phpMan.php/man/basic/3/markdown) — Attach a single field to a message
       **sd**___**bus**___**message**___**append**___**string**___**[iovec**(3)](https://www.chedong.com/phpMan.php/man/iovec/3/markdown) — Attach a string to a message
       **sd**___**bus**___**message**___**append**___**string**___**[memfd**(3)](https://www.chedong.com/phpMan.php/man/memfd/3/markdown) — Attach a string to a message
       **sd**___**bus**___**message**___**append**___**string**___**[space**(3)](https://www.chedong.com/phpMan.php/man/space/3/markdown) — Attach a string to a message
       **sd**___**bus**___**message**___**append**___**[strv**(3)](https://www.chedong.com/phpMan.php/man/strv/3/markdown) — Attach an array of strings to a message
       **sd**___**bus**___**message**___**[appendv**(3)](https://www.chedong.com/phpMan.php/man/appendv/3/markdown) — Attach fields to a D-Bus message based on a type string
       **sd**___**bus**___**message**___**at**___**[end**(3)](https://www.chedong.com/phpMan.php/man/end/3/markdown) — Check if a message has been fully read
       **sd**___**bus**___**message**___**close**___**[container**(3)](https://www.chedong.com/phpMan.php/man/container/3/markdown) — Create and move between containers in D-Bus messages
       **sd**___**bus**___**message**___**[copy**(3)](https://www.chedong.com/phpMan.php/man/copy/3/markdown) — Copy the contents of one message to another
       **sd**___**bus**___**message**___**[dump**(3)](https://www.chedong.com/phpMan.php/man/dump/3/markdown) — Produce a string representation of a message for debugging purposes
       **sd**___**bus**___**message**___**enter**___**[container**(3)](https://www.chedong.com/phpMan.php/man/container/3/markdown) — Create and move between containers in D-Bus messages
       **sd**___**bus**___**message**___**exit**___**[container**(3)](https://www.chedong.com/phpMan.php/man/container/3/markdown) — Create and move between containers in D-Bus messages
       **sd**___**bus**___**message**___**get**___**allow**___**interactive**___**[authorization**(3)](https://www.chedong.com/phpMan.php/man/authorization/3/markdown) — Set and query bus message metadata
       **sd**___**bus**___**message**___**get**___**auto**___**[start**(3)](https://www.chedong.com/phpMan.php/man/start/3/markdown) — Set and query bus message metadata
       **sd**___**bus**___**message**___**get**___**[bus**(3)](https://www.chedong.com/phpMan.php/man/bus/3/markdown) — Create a new bus message object and create or destroy references
       to it
       **sd**___**bus**___**message**___**get**___**[cookie**(3)](https://www.chedong.com/phpMan.php/man/cookie/3/markdown) — Returns the transaction cookie of a message
       **sd**___**bus**___**message**___**get**___**[creds**(3)](https://www.chedong.com/phpMan.php/man/creds/3/markdown) — Query bus message addressing/credentials metadata
       **sd**___**bus**___**message**___**get**___**[destination**(3)](https://www.chedong.com/phpMan.php/man/destination/3/markdown) — Set and query bus message addressing information
       **sd**___**bus**___**message**___**get**___**[errno**(3)](https://www.chedong.com/phpMan.php/man/errno/3/markdown) — Query bus message addressing/credentials metadata
       **sd**___**bus**___**message**___**get**___**[error**(3)](https://www.chedong.com/phpMan.php/man/error/3/markdown) — Query bus message addressing/credentials metadata
       **sd**___**bus**___**message**___**get**___**expect**___**[reply**(3)](https://www.chedong.com/phpMan.php/man/reply/3/markdown) — Set and query bus message metadata
       **sd**___**bus**___**message**___**get**___**[interface**(3)](https://www.chedong.com/phpMan.php/man/interface/3/markdown) — Set and query bus message addressing information
       **sd**___**bus**___**message**___**get**___**[member**(3)](https://www.chedong.com/phpMan.php/man/member/3/markdown) — Set and query bus message addressing information
       **sd**___**bus**___**message**___**get**___**monotonic**___**[usec**(3)](https://www.chedong.com/phpMan.php/man/usec/3/markdown) — Retrieve the sender timestamps and sequence number of
       a message
       **sd**___**bus**___**message**___**get**___**[path**(3)](https://www.chedong.com/phpMan.php/man/path/3/markdown) — Set and query bus message addressing information
       **sd**___**bus**___**message**___**get**___**realtime**___**[usec**(3)](https://www.chedong.com/phpMan.php/man/usec/3/markdown) — Retrieve the sender timestamps and sequence number of a
       message
       **sd**___**bus**___**message**___**get**___**reply**___**[cookie**(3)](https://www.chedong.com/phpMan.php/man/cookie/3/markdown) — Returns the transaction cookie of a message
       **sd**___**bus**___**message**___**get**___**[sender**(3)](https://www.chedong.com/phpMan.php/man/sender/3/markdown) — Set and query bus message addressing information
       **sd**___**bus**___**message**___**get**___**[seqnum**(3)](https://www.chedong.com/phpMan.php/man/seqnum/3/markdown) — Retrieve the sender timestamps and sequence number of a
       message
       **sd**___**bus**___**message**___**get**___**[signature**(3)](https://www.chedong.com/phpMan.php/man/signature/3/markdown) — Query bus message signature
       **sd**___**bus**___**message**___**get**___**[type**(3)](https://www.chedong.com/phpMan.php/man/type/3/markdown) — Query bus message addressing/credentials metadata
       **sd**___**bus**___**message**___**has**___**[signature**(3)](https://www.chedong.com/phpMan.php/man/signature/3/markdown) — Query bus message signature
       **sd**___**bus**___**message**___**is**___**[empty**(3)](https://www.chedong.com/phpMan.php/man/empty/3/markdown) — Query bus message signature
       **sd**___**bus**___**message**___**is**___**method**___**[call**(3)](https://www.chedong.com/phpMan.php/man/call/3/markdown) — Query bus message addressing/credentials metadata
       **sd**___**bus**___**message**___**is**___**method**___**[error**(3)](https://www.chedong.com/phpMan.php/man/error/3/markdown) — Query bus message addressing/credentials metadata
       **sd**___**bus**___**message**___**is**___**[signal**(3)](https://www.chedong.com/phpMan.php/man/signal/3/markdown) — Query bus message addressing/credentials metadata
       **SD**___**BUS**___**MESSAGE**___**METHOD**___**[CALL**(3)](https://www.chedong.com/phpMan.php/man/CALL/3/markdown) — Create a new bus message object and create or destroy
       references to it
       **SD**___**BUS**___**MESSAGE**___**METHOD**___**[ERROR**(3)](https://www.chedong.com/phpMan.php/man/ERROR/3/markdown) — Create a new bus message object and create or destroy
       references to it
       **SD**___**BUS**___**MESSAGE**___**METHOD**___**[RETURN**(3)](https://www.chedong.com/phpMan.php/man/RETURN/3/markdown) — Create a new bus message object and create or destroy
       references to it
       **sd**___**bus**___**message**___**[new**(3)](https://www.chedong.com/phpMan.php/man/new/3/markdown) — Create a new bus message object and create or destroy references to
       it
       **sd**___**bus**___**message**___**new**___**method**___**[call**(3)](https://www.chedong.com/phpMan.php/man/call/3/markdown) — Create a method call message
       **sd**___**bus**___**message**___**new**___**method**___**[errno**(3)](https://www.chedong.com/phpMan.php/man/errno/3/markdown) — Create an error reply for a method call
       **sd**___**bus**___**message**___**new**___**method**___**[errnof**(3)](https://www.chedong.com/phpMan.php/man/errnof/3/markdown) — Create an error reply for a method call
       **sd**___**bus**___**message**___**new**___**method**___**[error**(3)](https://www.chedong.com/phpMan.php/man/error/3/markdown) — Create an error reply for a method call
       **sd**___**bus**___**message**___**new**___**method**___**[errorf**(3)](https://www.chedong.com/phpMan.php/man/errorf/3/markdown) — Create an error reply for a method call
       **sd**___**bus**___**message**___**new**___**method**___**[return**(3)](https://www.chedong.com/phpMan.php/man/return/3/markdown) — Create a method call message
       **sd**___**bus**___**message**___**new**___**[signal**(3)](https://www.chedong.com/phpMan.php/man/signal/3/markdown) — Create a signal message
       **sd**___**bus**___**message**___**open**___**[container**(3)](https://www.chedong.com/phpMan.php/man/container/3/markdown) — Create and move between containers in D-Bus messages
       **sd**___**bus**___**message**___**peek**___**[type**(3)](https://www.chedong.com/phpMan.php/man/type/3/markdown) — Read a sequence of values from a message
       **sd**___**bus**___**message**___**[read**(3)](https://www.chedong.com/phpMan.php/man/read/3/markdown) — Read a sequence of values from a message
       **sd**___**bus**___**message**___**read**___**[array**(3)](https://www.chedong.com/phpMan.php/man/array/3/markdown) — Access an array of elements in a message
       **sd**___**bus**___**message**___**read**___**[basic**(3)](https://www.chedong.com/phpMan.php/man/basic/3/markdown) — Read a basic type from a message
       **sd**___**bus**___**message**___**read**___**[strv**(3)](https://www.chedong.com/phpMan.php/man/strv/3/markdown) — Access an array of strings in a message
       **sd**___**bus**___**message**___**[readv**(3)](https://www.chedong.com/phpMan.php/man/readv/3/markdown) — Read a sequence of values from a message
       **sd**___**bus**___**message**___**[ref**(3)](https://www.chedong.com/phpMan.php/man/ref/3/markdown) — Create a new bus message object and create or destroy references to
       it
       **sd**___**bus**___**message**___**[rewind**(3)](https://www.chedong.com/phpMan.php/man/rewind/3/markdown) — Return to beginning of message or current container
       **sd**___**bus**___**message**___**[seal**(3)](https://www.chedong.com/phpMan.php/man/seal/3/markdown) — Prepare a D-Bus message for transmission
       **sd**___**bus**___**message**___**[send**(3)](https://www.chedong.com/phpMan.php/man/send/3/markdown) — Queue a D-Bus message for transfer
       **sd**___**bus**___**message**___**[sensitive**(3)](https://www.chedong.com/phpMan.php/man/sensitive/3/markdown) — Mark a message object as containing sensitive data
       **sd**___**bus**___**message**___**set**___**allow**___**interactive**___**[authorization**(3)](https://www.chedong.com/phpMan.php/man/authorization/3/markdown) — Set and query bus message metadata
       **sd**___**bus**___**message**___**set**___**auto**___**[start**(3)](https://www.chedong.com/phpMan.php/man/start/3/markdown) — Set and query bus message metadata
       **sd**___**bus**___**message**___**set**___**[destination**(3)](https://www.chedong.com/phpMan.php/man/destination/3/markdown) — Set and query bus message addressing information
       **sd**___**bus**___**message**___**set**___**expect**___**[reply**(3)](https://www.chedong.com/phpMan.php/man/reply/3/markdown) — Set and query bus message metadata
       **sd**___**bus**___**message**___**set**___**[sender**(3)](https://www.chedong.com/phpMan.php/man/sender/3/markdown) — Set and query bus message addressing information
       **SD**___**BUS**___**MESSAGE**___**[SIGNAL**(3)](https://www.chedong.com/phpMan.php/man/SIGNAL/3/markdown) — Create a new bus message object and create or destroy references
       to it
       **sd**___**bus**___**message**___**[skip**(3)](https://www.chedong.com/phpMan.php/man/skip/3/markdown) — Skip elements in a bus message
       **sd**___**bus**___**message**___**[unref**(3)](https://www.chedong.com/phpMan.php/man/unref/3/markdown) — Create a new bus message object and create or destroy references to
       it
       **sd**___**bus**___**message**___**[unrefp**(3)](https://www.chedong.com/phpMan.php/man/unrefp/3/markdown) — Create a new bus message object and create or destroy references
       to it
       **sd**___**bus**___**message**___**verify**___**[type**(3)](https://www.chedong.com/phpMan.php/man/type/3/markdown) — Check if the message has specified type at the current
       location
       **SD**___**BUS**___**[METHOD**(3)](https://www.chedong.com/phpMan.php/man/METHOD/3/markdown) — Declare properties and methods for a D-Bus path
       **SD**___**BUS**___**METHOD**___**WITH**___**[NAMES**(3)](https://www.chedong.com/phpMan.php/man/NAMES/3/markdown) — Declare properties and methods for a D-Bus path
       **SD**___**BUS**___**METHOD**___**WITH**___**NAMES**___**[OFFSET**(3)](https://www.chedong.com/phpMan.php/man/OFFSET/3/markdown) — Declare properties and methods for a D-Bus path
       **SD**___**BUS**___**METHOD**___**WITH**___**[OFFSET**(3)](https://www.chedong.com/phpMan.php/man/OFFSET/3/markdown) — Declare properties and methods for a D-Bus path
       **sd**___**bus**___**negotiate**___**[creds**(3)](https://www.chedong.com/phpMan.php/man/creds/3/markdown) — Control feature negotiation on bus connections
       **sd**___**bus**___**negotiate**___**[fds**(3)](https://www.chedong.com/phpMan.php/man/fds/3/markdown) — Control feature negotiation on bus connections
       **sd**___**bus**___**negotiate**___**[timestamp**(3)](https://www.chedong.com/phpMan.php/man/timestamp/3/markdown) — Control feature negotiation on bus connections
       **sd**___**bus**___**[new**(3)](https://www.chedong.com/phpMan.php/man/new/3/markdown) — Create a new bus object and create or destroy references to it
       **sd**___**bus**___**object**___**path**___**is**___**[valid**(3)](https://www.chedong.com/phpMan.php/man/valid/3/markdown) — Check if a string is a valid bus name or object path
       **sd**___**bus**___**[open**(3)](https://www.chedong.com/phpMan.php/man/open/3/markdown) — Acquire a connection to a system or user bus
       **sd**___**bus**___**open**___**[system**(3)](https://www.chedong.com/phpMan.php/man/system/3/markdown) — Acquire a connection to a system or user bus
       **sd**___**bus**___**open**___**system**___**[machine**(3)](https://www.chedong.com/phpMan.php/man/machine/3/markdown) — Acquire a connection to a system or user bus
       **sd**___**bus**___**open**___**system**___**[remote**(3)](https://www.chedong.com/phpMan.php/man/remote/3/markdown) — Acquire a connection to a system or user bus
       **sd**___**bus**___**open**___**system**___**with**___**[description**(3)](https://www.chedong.com/phpMan.php/man/description/3/markdown) — Acquire a connection to a system or user bus
       **sd**___**bus**___**open**___**[user**(3)](https://www.chedong.com/phpMan.php/man/user/3/markdown) — Acquire a connection to a system or user bus
       **sd**___**bus**___**open**___**user**___**[machine**(3)](https://www.chedong.com/phpMan.php/man/machine/3/markdown) — Acquire a connection to a system or user bus
       **sd**___**bus**___**open**___**user**___**with**___**[description**(3)](https://www.chedong.com/phpMan.php/man/description/3/markdown) — Acquire a connection to a system or user bus
       **sd**___**bus**___**open**___**with**___**[description**(3)](https://www.chedong.com/phpMan.php/man/description/3/markdown) — Acquire a connection to a system or user bus
       **SD**___**BUS**___**[PARAM**(3)](https://www.chedong.com/phpMan.php/man/PARAM/3/markdown) — Declare properties and methods for a D-Bus path
       **sd**___**bus**___**path**___**[decode**(3)](https://www.chedong.com/phpMan.php/man/decode/3/markdown) — Convert an external identifier into an object path and back
       **sd**___**bus**___**path**___**decode**___**[many**(3)](https://www.chedong.com/phpMan.php/man/many/3/markdown) — Convert an external identifier into an object path and back
       **sd**___**bus**___**path**___**[encode**(3)](https://www.chedong.com/phpMan.php/man/encode/3/markdown) — Convert an external identifier into an object path and back
       **sd**___**bus**___**path**___**encode**___**[many**(3)](https://www.chedong.com/phpMan.php/man/many/3/markdown) — Convert an external identifier into an object path and back
       **sd**___**bus**___**[process**(3)](https://www.chedong.com/phpMan.php/man/process/3/markdown) — Drive the connection
       **SD**___**BUS**___**[PROPERTY**(3)](https://www.chedong.com/phpMan.php/man/PROPERTY/3/markdown) — Declare properties and methods for a D-Bus path
       **sd**___**bus**___**query**___**sender**___**[creds**(3)](https://www.chedong.com/phpMan.php/man/creds/3/markdown) — Query bus message sender credentials/privileges
       **sd**___**bus**___**query**___**sender**___**[privilege**(3)](https://www.chedong.com/phpMan.php/man/privilege/3/markdown) — Query bus message sender credentials/privileges
       **sd**___**bus**___**[ref**(3)](https://www.chedong.com/phpMan.php/man/ref/3/markdown) — Create a new bus object and create or destroy references to it
       **sd**___**bus**___**release**___**[name**(3)](https://www.chedong.com/phpMan.php/man/name/3/markdown) — Request or release a well-known service name on a bus
       **sd**___**bus**___**release**___**name**___**[async**(3)](https://www.chedong.com/phpMan.php/man/async/3/markdown) — Request or release a well-known service name on a bus
       **sd**___**bus**___**reply**___**method**___**[errno**(3)](https://www.chedong.com/phpMan.php/man/errno/3/markdown) — Reply with an error to a D-Bus method call
       **sd**___**bus**___**reply**___**method**___**[errnof**(3)](https://www.chedong.com/phpMan.php/man/errnof/3/markdown) — Reply with an error to a D-Bus method call
       **sd**___**bus**___**reply**___**method**___**[errnofv**(3)](https://www.chedong.com/phpMan.php/man/errnofv/3/markdown) — Reply with an error to a D-Bus method call
       **sd**___**bus**___**reply**___**method**___**[error**(3)](https://www.chedong.com/phpMan.php/man/error/3/markdown) — Reply with an error to a D-Bus method call
       **sd**___**bus**___**reply**___**method**___**[errorf**(3)](https://www.chedong.com/phpMan.php/man/errorf/3/markdown) — Reply with an error to a D-Bus method call
       **sd**___**bus**___**reply**___**method**___**[errorfv**(3)](https://www.chedong.com/phpMan.php/man/errorfv/3/markdown) — Reply with an error to a D-Bus method call
       **sd**___**bus**___**reply**___**method**___**[return**(3)](https://www.chedong.com/phpMan.php/man/return/3/markdown) — Reply to a D-Bus method call
       **sd**___**bus**___**reply**___**method**___**[returnv**(3)](https://www.chedong.com/phpMan.php/man/returnv/3/markdown) — Reply to a D-Bus method call
       **sd**___**bus**___**request**___**[name**(3)](https://www.chedong.com/phpMan.php/man/name/3/markdown) — Request or release a well-known service name on a bus
       **sd**___**bus**___**request**___**name**___**[async**(3)](https://www.chedong.com/phpMan.php/man/async/3/markdown) — Request or release a well-known service name on a bus
       **sd**___**bus**___**[send**(3)](https://www.chedong.com/phpMan.php/man/send/3/markdown) — Queue a D-Bus message for transfer
       **sd**___**bus**___**send**___**[to**(3)](https://www.chedong.com/phpMan.php/man/to/3/markdown) — Queue a D-Bus message for transfer
       **sd**___**bus**___**service**___**name**___**is**___**[valid**(3)](https://www.chedong.com/phpMan.php/man/valid/3/markdown) — Check if a string is a valid bus name or object path
       **sd**___**bus**___**set**___**[address**(3)](https://www.chedong.com/phpMan.php/man/address/3/markdown) — Set or query the address of the bus connection
       **sd**___**bus**___**set**___**allow**___**interactive**___**[authorization**(3)](https://www.chedong.com/phpMan.php/man/authorization/3/markdown) — Set or query properties of a bus object
       **sd**___**bus**___**set**___**[anonymous**(3)](https://www.chedong.com/phpMan.php/man/anonymous/3/markdown) — Set or query properties of a bus object
       **sd**___**bus**___**set**___**bus**___**[client**(3)](https://www.chedong.com/phpMan.php/man/client/3/markdown) — Configure connection mode for a bus object
       **sd**___**bus**___**set**___**close**___**on**___**[exit**(3)](https://www.chedong.com/phpMan.php/man/exit/3/markdown) — Control whether to close the bus connection during the event
       loop exit phase
       **sd**___**bus**___**set**___**connected**___**[signal**(3)](https://www.chedong.com/phpMan.php/man/signal/3/markdown) — Control emission of local connection establishment signal on
       bus connections
       **sd**___**bus**___**set**___**[description**(3)](https://www.chedong.com/phpMan.php/man/description/3/markdown) — Set or query properties of a bus object
       **sd**___**bus**___**set**___**[exec**(3)](https://www.chedong.com/phpMan.php/man/exec/3/markdown) — Set or query the address of the bus connection
       **sd**___**bus**___**set**___**exit**___**on**___**[disconnect**(3)](https://www.chedong.com/phpMan.php/man/disconnect/3/markdown) — Control the exit behavior when the bus object disconnects
       **sd**___**bus**___**set**___**[fd**(3)](https://www.chedong.com/phpMan.php/man/fd/3/markdown) — Set the file descriptors to use for bus communication
       **sd**___**bus**___**set**___**method**___**call**___**[timeout**(3)](https://www.chedong.com/phpMan.php/man/timeout/3/markdown) — Set or query the default D-Bus method call timeout of a
       bus object
       **sd**___**bus**___**set**___**[monitor**(3)](https://www.chedong.com/phpMan.php/man/monitor/3/markdown) — Configure connection mode for a bus object
       **sd**___**bus**___**set**___**[property**(3)](https://www.chedong.com/phpMan.php/man/property/3/markdown) — Set or query D-Bus service properties
       **sd**___**bus**___**set**___**[propertyv**(3)](https://www.chedong.com/phpMan.php/man/propertyv/3/markdown) — Set or query D-Bus service properties
       **sd**___**bus**___**set**___**[sender**(3)](https://www.chedong.com/phpMan.php/man/sender/3/markdown) — Configure default sender for outgoing messages
       **sd**___**bus**___**set**___**[server**(3)](https://www.chedong.com/phpMan.php/man/server/3/markdown) — Configure connection mode for a bus object
       **sd**___**bus**___**set**___**[trusted**(3)](https://www.chedong.com/phpMan.php/man/trusted/3/markdown) — Set or query properties of a bus object
       **sd**___**bus**___**set**___**watch**___**[bind**(3)](https://www.chedong.com/phpMan.php/man/bind/3/markdown) — Control socket binding watching on bus connections
       **SD**___**BUS**___**[SIGNAL**(3)](https://www.chedong.com/phpMan.php/man/SIGNAL/3/markdown) — Declare properties and methods for a D-Bus path
       **SD**___**BUS**___**SIGNAL**___**WITH**___**[NAMES**(3)](https://www.chedong.com/phpMan.php/man/NAMES/3/markdown) — Declare properties and methods for a D-Bus path
       **sd**___**bus**___**slot**___**get**___**[bus**(3)](https://www.chedong.com/phpMan.php/man/bus/3/markdown) — Query information attached to a bus slot object
       **sd**___**bus**___**slot**___**get**___**current**___**[handler**(3)](https://www.chedong.com/phpMan.php/man/handler/3/markdown) — Query information attached to a bus slot object
       **sd**___**bus**___**slot**___**get**___**current**___**[message**(3)](https://www.chedong.com/phpMan.php/man/message/3/markdown) — Query information attached to a bus slot object
       **sd**___**bus**___**slot**___**get**___**current**___**[userdata**(3)](https://www.chedong.com/phpMan.php/man/userdata/3/markdown) — Query information attached to a bus slot object
       **sd**___**bus**___**slot**___**get**___**[description**(3)](https://www.chedong.com/phpMan.php/man/description/3/markdown) — Set or query the description of bus slot objects
       **sd**___**bus**___**slot**___**get**___**destroy**___**[callback**(3)](https://www.chedong.com/phpMan.php/man/callback/3/markdown) — Define the callback function for resource cleanup
       **sd**___**bus**___**slot**___**get**___**[floating**(3)](https://www.chedong.com/phpMan.php/man/floating/3/markdown) — Control whether a bus slot object is "floating"
       **sd**___**bus**___**slot**___**get**___**[userdata**(3)](https://www.chedong.com/phpMan.php/man/userdata/3/markdown) — Set and query the value in the "userdata" field
       **sd**___**bus**___**slot**___**[ref**(3)](https://www.chedong.com/phpMan.php/man/ref/3/markdown) — Create and destroy references to a bus slot object
       **sd**___**bus**___**slot**___**set**___**[description**(3)](https://www.chedong.com/phpMan.php/man/description/3/markdown) — Set or query the description of bus slot objects
       **sd**___**bus**___**slot**___**set**___**destroy**___**[callback**(3)](https://www.chedong.com/phpMan.php/man/callback/3/markdown) — Define the callback function for resource cleanup
       **sd**___**bus**___**slot**___**set**___**[floating**(3)](https://www.chedong.com/phpMan.php/man/floating/3/markdown) — Control whether a bus slot object is "floating"
       **sd**___**bus**___**slot**___**set**___**[userdata**(3)](https://www.chedong.com/phpMan.php/man/userdata/3/markdown) — Set and query the value in the "userdata" field
       **sd**___**bus**___**slot**___**[unref**(3)](https://www.chedong.com/phpMan.php/man/unref/3/markdown) — Create and destroy references to a bus slot object
       **sd**___**bus**___**slot**___**[unrefp**(3)](https://www.chedong.com/phpMan.php/man/unrefp/3/markdown) — Create and destroy references to a bus slot object
       **sd**___**bus**___**[start**(3)](https://www.chedong.com/phpMan.php/man/start/3/markdown) — Initiate a bus connection to the D-bus broker daemon
       **sd**___**bus**___**track**___**add**___**[name**(3)](https://www.chedong.com/phpMan.php/man/name/3/markdown) — Add, remove and retrieve bus peers tracked in a bus peer tracking
       object
       **sd**___**bus**___**track**___**add**___**[sender**(3)](https://www.chedong.com/phpMan.php/man/sender/3/markdown) — Add, remove and retrieve bus peers tracked in a bus peer
       tracking object
       **sd**___**bus**___**track**___**[contains**(3)](https://www.chedong.com/phpMan.php/man/contains/3/markdown) — Add, remove and retrieve bus peers tracked in a bus peer tracking
       object
       **sd**___**bus**___**track**___**[count**(3)](https://www.chedong.com/phpMan.php/man/count/3/markdown) — Add, remove and retrieve bus peers tracked in a bus peer tracking
       object
       **sd**___**bus**___**track**___**count**___**[name**(3)](https://www.chedong.com/phpMan.php/man/name/3/markdown) — Add, remove and retrieve bus peers tracked in a bus peer
       tracking object
       **sd**___**bus**___**track**___**count**___**[sender**(3)](https://www.chedong.com/phpMan.php/man/sender/3/markdown) — Add, remove and retrieve bus peers tracked in a bus peer
       tracking object
       **sd**___**bus**___**track**___**[first**(3)](https://www.chedong.com/phpMan.php/man/first/3/markdown) — Add, remove and retrieve bus peers tracked in a bus peer tracking
       object
       **sd**___**bus**___**track**___**get**___**[bus**(3)](https://www.chedong.com/phpMan.php/man/bus/3/markdown) — Track bus peers
       **sd**___**bus**___**track**___**get**___**destroy**___**[callback**(3)](https://www.chedong.com/phpMan.php/man/callback/3/markdown) — Define the callback function for resource cleanup
       **sd**___**bus**___**track**___**get**___**[recursive**(3)](https://www.chedong.com/phpMan.php/man/recursive/3/markdown) — Track bus peers
       **sd**___**bus**___**track**___**get**___**[userdata**(3)](https://www.chedong.com/phpMan.php/man/userdata/3/markdown) — Track bus peers
       **sd**___**bus**___**track**___**[new**(3)](https://www.chedong.com/phpMan.php/man/new/3/markdown) — Track bus peers
       **sd**___**bus**___**track**___**[next**(3)](https://www.chedong.com/phpMan.php/man/next/3/markdown) — Add, remove and retrieve bus peers tracked in a bus peer tracking
       object
       **sd**___**bus**___**track**___**[ref**(3)](https://www.chedong.com/phpMan.php/man/ref/3/markdown) — Track bus peers
       **sd**___**bus**___**track**___**remove**___**[name**(3)](https://www.chedong.com/phpMan.php/man/name/3/markdown) — Add, remove and retrieve bus peers tracked in a bus peer
       tracking object
       **sd**___**bus**___**track**___**remove**___**[sender**(3)](https://www.chedong.com/phpMan.php/man/sender/3/markdown) — Add, remove and retrieve bus peers tracked in a bus peer
       tracking object
       **sd**___**bus**___**track**___**set**___**destroy**___**[callback**(3)](https://www.chedong.com/phpMan.php/man/callback/3/markdown) — Define the callback function for resource cleanup
       **sd**___**bus**___**track**___**set**___**[recursive**(3)](https://www.chedong.com/phpMan.php/man/recursive/3/markdown) — Track bus peers
       **sd**___**bus**___**track**___**set**___**[userdata**(3)](https://www.chedong.com/phpMan.php/man/userdata/3/markdown) — Track bus peers
       **sd**___**bus**___**track**___**[unref**(3)](https://www.chedong.com/phpMan.php/man/unref/3/markdown) — Track bus peers
       **sd**___**bus**___**track**___**[unrefp**(3)](https://www.chedong.com/phpMan.php/man/unrefp/3/markdown) — Track bus peers
       **sd**___**bus**___**[unref**(3)](https://www.chedong.com/phpMan.php/man/unref/3/markdown) — Create a new bus object and create or destroy references to it
       **sd**___**bus**___**[unrefp**(3)](https://www.chedong.com/phpMan.php/man/unrefp/3/markdown) — Create a new bus object and create or destroy references to it
       **SD**___**BUS**___**VTABLE**___**[CAPABILITY**(3)](https://www.chedong.com/phpMan.php/man/CAPABILITY/3/markdown) — Declare properties and methods for a D-Bus path
       **SD**___**BUS**___**VTABLE**___**[END**(3)](https://www.chedong.com/phpMan.php/man/END/3/markdown) — Declare properties and methods for a D-Bus path
       **SD**___**BUS**___**VTABLE**___**[START**(3)](https://www.chedong.com/phpMan.php/man/START/3/markdown) — Declare properties and methods for a D-Bus path
       **sd**___**bus**___**[wait**(3)](https://www.chedong.com/phpMan.php/man/wait/3/markdown) — Wait for I/O on a bus connection
       **SD**___**BUS**___**WRITABLE**___**[PROPERTY**(3)](https://www.chedong.com/phpMan.php/man/PROPERTY/3/markdown) — Declare properties and methods for a D-Bus path
       **SD**___**[CRIT**(3)](https://www.chedong.com/phpMan.php/man/CRIT/3/markdown) — APIs for new-style daemons
       **SD**___**[DEBUG**(3)](https://www.chedong.com/phpMan.php/man/DEBUG/3/markdown) — APIs for new-style daemons
       **SD**___**[EMERG**(3)](https://www.chedong.com/phpMan.php/man/EMERG/3/markdown) — APIs for new-style daemons
       **SD**___**[ERR**(3)](https://www.chedong.com/phpMan.php/man/ERR/3/markdown) — APIs for new-style daemons
       **sd**___**[event**(3)](https://www.chedong.com/phpMan.php/man/event/3/markdown) — Acquire and release an event loop object
       **sd**___**event**___**add**___**[child**(3)](https://www.chedong.com/phpMan.php/man/child/3/markdown) — Add a child process state change event source to an event loop
       **sd**___**event**___**add**___**child**___**[pidfd**(3)](https://www.chedong.com/phpMan.php/man/pidfd/3/markdown) — Add a child process state change event source to an event loop
       **sd**___**event**___**add**___**[defer**(3)](https://www.chedong.com/phpMan.php/man/defer/3/markdown) — Add static event sources to an event loop
       **sd**___**event**___**add**___**[exit**(3)](https://www.chedong.com/phpMan.php/man/exit/3/markdown) — Add static event sources to an event loop
       **sd**___**event**___**add**___**[inotify**(3)](https://www.chedong.com/phpMan.php/man/inotify/3/markdown) — Add an "inotify" file system inode event source to an event loop
       **sd**___**event**___**add**___**[io**(3)](https://www.chedong.com/phpMan.php/man/io/3/markdown) — Add an I/O event source to an event loop
       **sd**___**event**___**add**___**[post**(3)](https://www.chedong.com/phpMan.php/man/post/3/markdown) — Add static event sources to an event loop
       **sd**___**event**___**add**___**[signal**(3)](https://www.chedong.com/phpMan.php/man/signal/3/markdown) — Add a UNIX process signal event source to an event loop
       **sd**___**event**___**add**___**[time**(3)](https://www.chedong.com/phpMan.php/man/time/3/markdown) — Add a timer event source to an event loop
       **sd**___**event**___**add**___**time**___**[relative**(3)](https://www.chedong.com/phpMan.php/man/relative/3/markdown) — Add a timer event source to an event loop
       **SD**___**EVENT**___**[ARMED**(3)](https://www.chedong.com/phpMan.php/man/ARMED/3/markdown) — Low-level event loop operations
       **sd**___**event**___**child**___**handler**___**[t**(3)](https://www.chedong.com/phpMan.php/man/t/3/markdown) — Add a child process state change event source to an event loop
       **sd**___**event**___**[default**(3)](https://www.chedong.com/phpMan.php/man/default/3/markdown) — Acquire and release an event loop object
       **sd**___**event**___**destroy**___**[t**(3)](https://www.chedong.com/phpMan.php/man/t/3/markdown) — Define the callback function for resource cleanup
       **sd**___**event**___**[dispatch**(3)](https://www.chedong.com/phpMan.php/man/dispatch/3/markdown) — Low-level event loop operations
       **sd**___**event**___**[exit**(3)](https://www.chedong.com/phpMan.php/man/exit/3/markdown) — Ask the event loop to exit
       **SD**___**EVENT**___**[EXITING**(3)](https://www.chedong.com/phpMan.php/man/EXITING/3/markdown) — Low-level event loop operations
       **SD**___**EVENT**___**[FINISHED**(3)](https://www.chedong.com/phpMan.php/man/FINISHED/3/markdown) — Low-level event loop operations
       **sd**___**event**___**get**___**exit**___**[code**(3)](https://www.chedong.com/phpMan.php/man/code/3/markdown) — Ask the event loop to exit
       **sd**___**event**___**get**___**[fd**(3)](https://www.chedong.com/phpMan.php/man/fd/3/markdown) — Obtain a file descriptor to poll for event loop events
       **sd**___**event**___**get**___**[iteration**(3)](https://www.chedong.com/phpMan.php/man/iteration/3/markdown) — Low-level event loop operations
       **sd**___**event**___**get**___**[state**(3)](https://www.chedong.com/phpMan.php/man/state/3/markdown) — Low-level event loop operations
       **sd**___**event**___**get**___**[tid**(3)](https://www.chedong.com/phpMan.php/man/tid/3/markdown) — Acquire and release an event loop object
       **sd**___**event**___**get**___**[watchdog**(3)](https://www.chedong.com/phpMan.php/man/watchdog/3/markdown) — Enable event loop watchdog support
       **sd**___**event**___**handler**___**[t**(3)](https://www.chedong.com/phpMan.php/man/t/3/markdown) — Add static event sources to an event loop
       **SD**___**EVENT**___**[INITIAL**(3)](https://www.chedong.com/phpMan.php/man/INITIAL/3/markdown) — Low-level event loop operations
       **sd**___**event**___**inotify**___**handler**___**[t**(3)](https://www.chedong.com/phpMan.php/man/t/3/markdown) — Add an "inotify" file system inode event source to an event
       loop
       **sd**___**event**___**io**___**handler**___**[t**(3)](https://www.chedong.com/phpMan.php/man/t/3/markdown) — Add an I/O event source to an event loop
       **sd**___**event**___**[loop**(3)](https://www.chedong.com/phpMan.php/man/loop/3/markdown) — Run an event loop
       **sd**___**event**___**[new**(3)](https://www.chedong.com/phpMan.php/man/new/3/markdown) — Acquire and release an event loop object
       **sd**___**event**___**[now**(3)](https://www.chedong.com/phpMan.php/man/now/3/markdown) — Retrieve current event loop iteration timestamp
       **SD**___**EVENT**___**[OFF**(3)](https://www.chedong.com/phpMan.php/man/OFF/3/markdown) — Enable or disable event sources
       **SD**___**EVENT**___**[ON**(3)](https://www.chedong.com/phpMan.php/man/ON/3/markdown) — Enable or disable event sources
       **SD**___**EVENT**___**[ONESHOT**(3)](https://www.chedong.com/phpMan.php/man/ONESHOT/3/markdown) — Enable or disable event sources
       **SD**___**EVENT**___**[PENDING**(3)](https://www.chedong.com/phpMan.php/man/PENDING/3/markdown) — Low-level event loop operations
       **sd**___**event**___**[prepare**(3)](https://www.chedong.com/phpMan.php/man/prepare/3/markdown) — Low-level event loop operations
       **SD**___**EVENT**___**[PREPARING**(3)](https://www.chedong.com/phpMan.php/man/PREPARING/3/markdown) — Low-level event loop operations
       **SD**___**EVENT**___**PRIORITY**___**[IDLE**(3)](https://www.chedong.com/phpMan.php/man/IDLE/3/markdown) — Set or retrieve the priority of event sources
       **SD**___**EVENT**___**PRIORITY**___**[IMPORTANT**(3)](https://www.chedong.com/phpMan.php/man/IMPORTANT/3/markdown) — Set or retrieve the priority of event sources
       **SD**___**EVENT**___**PRIORITY**___**[NORMAL**(3)](https://www.chedong.com/phpMan.php/man/NORMAL/3/markdown) — Set or retrieve the priority of event sources
       **sd**___**event**___**[ref**(3)](https://www.chedong.com/phpMan.php/man/ref/3/markdown) — Acquire and release an event loop object
       **sd**___**event**___**[run**(3)](https://www.chedong.com/phpMan.php/man/run/3/markdown) — Run an event loop
       **SD**___**EVENT**___**[RUNNING**(3)](https://www.chedong.com/phpMan.php/man/RUNNING/3/markdown) — Low-level event loop operations
       **sd**___**event**___**set**___**[watchdog**(3)](https://www.chedong.com/phpMan.php/man/watchdog/3/markdown) — Enable event loop watchdog support
       **sd**___**event**___**signal**___**handler**___**[t**(3)](https://www.chedong.com/phpMan.php/man/t/3/markdown) — Add a UNIX process signal event source to an event loop
       **sd**___**event**___**[source**(3)](https://www.chedong.com/phpMan.php/man/source/3/markdown) — Add an I/O event source to an event loop
       **sd**___**event**___**source**___**disable**___**[unref**(3)](https://www.chedong.com/phpMan.php/man/unref/3/markdown) — Increase or decrease event source reference counters
       **sd**___**event**___**source**___**disable**___**[unrefp**(3)](https://www.chedong.com/phpMan.php/man/unrefp/3/markdown) — Increase or decrease event source reference counters
       **sd**___**event**___**source**___**get**___**child**___**[pid**(3)](https://www.chedong.com/phpMan.php/man/pid/3/markdown) — Add a child process state change event source to an event
       loop
       **sd**___**event**___**source**___**get**___**child**___**[pidfd**(3)](https://www.chedong.com/phpMan.php/man/pidfd/3/markdown) — Add a child process state change event source to an
       event loop
       **sd**___**event**___**source**___**get**___**child**___**pidfd**___**[own**(3)](https://www.chedong.com/phpMan.php/man/own/3/markdown) — Add a child process state change event source to an
       event loop
       **sd**___**event**___**source**___**get**___**child**___**process**___**[own**(3)](https://www.chedong.com/phpMan.php/man/own/3/markdown) — Add a child process state change event source to
       an event loop
       **sd**___**event**___**source**___**get**___**[description**(3)](https://www.chedong.com/phpMan.php/man/description/3/markdown) — Set or retrieve descriptive names of event sources
       **sd**___**event**___**source**___**get**___**destroy**___**[callback**(3)](https://www.chedong.com/phpMan.php/man/callback/3/markdown) — Define the callback function for resource cleanup
       **sd**___**event**___**source**___**get**___**[enabled**(3)](https://www.chedong.com/phpMan.php/man/enabled/3/markdown) — Enable or disable event sources
       **sd**___**event**___**source**___**get**___**[event**(3)](https://www.chedong.com/phpMan.php/man/event/3/markdown) — Retrieve the event loop of an event source
       **sd**___**event**___**source**___**get**___**exit**___**on**___**[failure**(3)](https://www.chedong.com/phpMan.php/man/failure/3/markdown) — Set or retrieve the exit-on-failure feature of event
       sources
       **sd**___**event**___**source**___**get**___**[floating**(3)](https://www.chedong.com/phpMan.php/man/floating/3/markdown) — Set or retrieve 'floating' state of event sources
       **sd**___**event**___**source**___**get**___**inotify**___**[mask**(3)](https://www.chedong.com/phpMan.php/man/mask/3/markdown) — Add an "inotify" file system inode event source to an
       event loop
       **sd**___**event**___**source**___**get**___**io**___**[events**(3)](https://www.chedong.com/phpMan.php/man/events/3/markdown) — Add an I/O event source to an event loop
       **sd**___**event**___**source**___**get**___**io**___**[fd**(3)](https://www.chedong.com/phpMan.php/man/fd/3/markdown) — Add an I/O event source to an event loop
       **sd**___**event**___**source**___**get**___**io**___**fd**___**[own**(3)](https://www.chedong.com/phpMan.php/man/own/3/markdown) — Add an I/O event source to an event loop
       **sd**___**event**___**source**___**get**___**io**___**[revents**(3)](https://www.chedong.com/phpMan.php/man/revents/3/markdown) — Add an I/O event source to an event loop
       **sd**___**event**___**source**___**get**___**[pending**(3)](https://www.chedong.com/phpMan.php/man/pending/3/markdown) — Determine pending state of event sources
       **sd**___**event**___**source**___**get**___**[priority**(3)](https://www.chedong.com/phpMan.php/man/priority/3/markdown) — Set or retrieve the priority of event sources
       **sd**___**event**___**source**___**get**___**[ratelimit**(3)](https://www.chedong.com/phpMan.php/man/ratelimit/3/markdown) — Configure rate limiting on event sources
       **sd**___**event**___**source**___**get**___**[signal**(3)](https://www.chedong.com/phpMan.php/man/signal/3/markdown) — Add a UNIX process signal event source to an event loop
       **sd**___**event**___**source**___**get**___**[time**(3)](https://www.chedong.com/phpMan.php/man/time/3/markdown) — Add a timer event source to an event loop
       **sd**___**event**___**source**___**get**___**time**___**[accuracy**(3)](https://www.chedong.com/phpMan.php/man/accuracy/3/markdown) — Add a timer event source to an event loop
       **sd**___**event**___**source**___**get**___**time**___**[clock**(3)](https://www.chedong.com/phpMan.php/man/clock/3/markdown) — Add a timer event source to an event loop
       **sd**___**event**___**source**___**get**___**[userdata**(3)](https://www.chedong.com/phpMan.php/man/userdata/3/markdown) — Set or retrieve user data pointer of event sources
       **sd**___**event**___**source**___**is**___**[ratelimited**(3)](https://www.chedong.com/phpMan.php/man/ratelimited/3/markdown) — Configure rate limiting on event sources
       **sd**___**event**___**source**___**[ref**(3)](https://www.chedong.com/phpMan.php/man/ref/3/markdown) — Increase or decrease event source reference counters
       **sd**___**event**___**source**___**send**___**child**___**[signal**(3)](https://www.chedong.com/phpMan.php/man/signal/3/markdown) — Add a child process state change event source to an
       event loop
       **sd**___**event**___**source**___**set**___**child**___**pidfd**___**[own**(3)](https://www.chedong.com/phpMan.php/man/own/3/markdown) — Add a child process state change event source to an
       event loop
       **sd**___**event**___**source**___**set**___**child**___**process**___**[own**(3)](https://www.chedong.com/phpMan.php/man/own/3/markdown) — Add a child process state change event source to
       an event loop
       **sd**___**event**___**source**___**set**___**[description**(3)](https://www.chedong.com/phpMan.php/man/description/3/markdown) — Set or retrieve descriptive names of event sources
       **sd**___**event**___**source**___**set**___**destroy**___**[callback**(3)](https://www.chedong.com/phpMan.php/man/callback/3/markdown) — Define the callback function for resource cleanup
       **sd**___**event**___**source**___**set**___**[enabled**(3)](https://www.chedong.com/phpMan.php/man/enabled/3/markdown) — Enable or disable event sources
       **sd**___**event**___**source**___**set**___**exit**___**on**___**[failure**(3)](https://www.chedong.com/phpMan.php/man/failure/3/markdown) — Set or retrieve the exit-on-failure feature of event
       sources
       **sd**___**event**___**source**___**set**___**[floating**(3)](https://www.chedong.com/phpMan.php/man/floating/3/markdown) — Set or retrieve 'floating' state of event sources
       **sd**___**event**___**source**___**set**___**io**___**[events**(3)](https://www.chedong.com/phpMan.php/man/events/3/markdown) — Add an I/O event source to an event loop
       **sd**___**event**___**source**___**set**___**io**___**[fd**(3)](https://www.chedong.com/phpMan.php/man/fd/3/markdown) — Add an I/O event source to an event loop
       **sd**___**event**___**source**___**set**___**io**___**fd**___**[own**(3)](https://www.chedong.com/phpMan.php/man/own/3/markdown) — Add an I/O event source to an event loop
       **sd**___**event**___**source**___**set**___**[prepare**(3)](https://www.chedong.com/phpMan.php/man/prepare/3/markdown) — Set a preparation callback for event sources
       **sd**___**event**___**source**___**set**___**[priority**(3)](https://www.chedong.com/phpMan.php/man/priority/3/markdown) — Set or retrieve the priority of event sources
       **sd**___**event**___**source**___**set**___**[ratelimit**(3)](https://www.chedong.com/phpMan.php/man/ratelimit/3/markdown) — Configure rate limiting on event sources
       **sd**___**event**___**source**___**set**___**[time**(3)](https://www.chedong.com/phpMan.php/man/time/3/markdown) — Add a timer event source to an event loop
       **sd**___**event**___**source**___**set**___**time**___**[accuracy**(3)](https://www.chedong.com/phpMan.php/man/accuracy/3/markdown) — Add a timer event source to an event loop
       **sd**___**event**___**source**___**set**___**time**___**[relative**(3)](https://www.chedong.com/phpMan.php/man/relative/3/markdown) — Add a timer event source to an event loop
       **sd**___**event**___**source**___**set**___**[userdata**(3)](https://www.chedong.com/phpMan.php/man/userdata/3/markdown) — Set or retrieve user data pointer of event sources
       **sd**___**event**___**source**___**[unref**(3)](https://www.chedong.com/phpMan.php/man/unref/3/markdown) — Increase or decrease event source reference counters
       **sd**___**event**___**source**___**[unrefp**(3)](https://www.chedong.com/phpMan.php/man/unrefp/3/markdown) — Increase or decrease event source reference counters
       **sd**___**event**___**time**___**handler**___**[t**(3)](https://www.chedong.com/phpMan.php/man/t/3/markdown) — Add a timer event source to an event loop
       **sd**___**event**___**[unref**(3)](https://www.chedong.com/phpMan.php/man/unref/3/markdown) — Acquire and release an event loop object
       **sd**___**event**___**[unrefp**(3)](https://www.chedong.com/phpMan.php/man/unrefp/3/markdown) — Acquire and release an event loop object
       **sd**___**event**___**[wait**(3)](https://www.chedong.com/phpMan.php/man/wait/3/markdown) — Low-level event loop operations
       **sd**___**get**___**machine**___**[names**(3)](https://www.chedong.com/phpMan.php/man/names/3/markdown) — Determine available seats, sessions, logged in users and virtual
       machines/containers
       **sd**___**get**___**[seats**(3)](https://www.chedong.com/phpMan.php/man/seats/3/markdown) — Determine available seats, sessions, logged in users and virtual
       machines/containers
       **sd**___**get**___**[sessions**(3)](https://www.chedong.com/phpMan.php/man/sessions/3/markdown) — Determine available seats, sessions, logged in users and virtual
       machines/containers
       **sd**___**get**___**[uids**(3)](https://www.chedong.com/phpMan.php/man/uids/3/markdown) — Determine available seats, sessions, logged in users and virtual
       machines/containers
       **sd**___**hwdb**___**[enumerate**(3)](https://www.chedong.com/phpMan.php/man/enumerate/3/markdown) — Seek to a location in hwdb or access entries
       **SD**___**HWDB**___**FOREACH**___**[PROPERTY**(3)](https://www.chedong.com/phpMan.php/man/PROPERTY/3/markdown) — Seek to a location in hwdb or access entries
       **sd**___**hwdb**___**[get**(3)](https://www.chedong.com/phpMan.php/man/get/3/markdown) — Seek to a location in hwdb or access entries
       **sd**___**hwdb**___**[new**(3)](https://www.chedong.com/phpMan.php/man/new/3/markdown) — Create a new hwdb object and create or destroy references to it
       **sd**___**hwdb**___**new**___**from**___**[path**(3)](https://www.chedong.com/phpMan.php/man/path/3/markdown) — Create a new hwdb object and create or destroy references to it
       **sd**___**hwdb**___**[ref**(3)](https://www.chedong.com/phpMan.php/man/ref/3/markdown) — Create a new hwdb object and create or destroy references to it
       **sd**___**hwdb**___**[seek**(3)](https://www.chedong.com/phpMan.php/man/seek/3/markdown) — Seek to a location in hwdb or access entries
       **sd**___**hwdb**___**[unref**(3)](https://www.chedong.com/phpMan.php/man/unref/3/markdown) — Create a new hwdb object and create or destroy references to it
       **SD**___**ID128**___**[ALLF**(3)](https://www.chedong.com/phpMan.php/man/ALLF/3/markdown) — APIs for processing 128-bit IDs
       **SD**___**ID128**___**CONST**___**[STR**(3)](https://www.chedong.com/phpMan.php/man/STR/3/markdown) — APIs for processing 128-bit IDs
       **sd**___**id128**___**[equal**(3)](https://www.chedong.com/phpMan.php/man/equal/3/markdown) — APIs for processing 128-bit IDs
       **SD**___**ID128**___**FORMAT**___**[STR**(3)](https://www.chedong.com/phpMan.php/man/STR/3/markdown) — APIs for processing 128-bit IDs
       **SD**___**ID128**___**FORMAT**___**[VAL**(3)](https://www.chedong.com/phpMan.php/man/VAL/3/markdown) — APIs for processing 128-bit IDs
       **sd**___**id128**___**from**___**[string**(3)](https://www.chedong.com/phpMan.php/man/string/3/markdown) — Format or parse 128-bit IDs as strings
       **sd**___**id128**___**get**___**[boot**(3)](https://www.chedong.com/phpMan.php/man/boot/3/markdown) — Retrieve 128-bit IDs
       **sd**___**id128**___**get**___**boot**___**app**___**[specific**(3)](https://www.chedong.com/phpMan.php/man/specific/3/markdown) — Retrieve 128-bit IDs
       **sd**___**id128**___**get**___**[invocation**(3)](https://www.chedong.com/phpMan.php/man/invocation/3/markdown) — Retrieve 128-bit IDs
       **sd**___**id128**___**get**___**[machine**(3)](https://www.chedong.com/phpMan.php/man/machine/3/markdown) — Retrieve 128-bit IDs
       **sd**___**id128**___**get**___**machine**___**app**___**[specific**(3)](https://www.chedong.com/phpMan.php/man/specific/3/markdown) — Retrieve 128-bit IDs
       **sd**___**id128**___**in**___**[set**(3)](https://www.chedong.com/phpMan.php/man/set/3/markdown) — APIs for processing 128-bit IDs
       **sd**___**id128**___**in**___**set**___**[sentinel**(3)](https://www.chedong.com/phpMan.php/man/sentinel/3/markdown) — APIs for processing 128-bit IDs
       **sd**___**id128**___**in**___**[setv**(3)](https://www.chedong.com/phpMan.php/man/setv/3/markdown) — APIs for processing 128-bit IDs
       **sd**___**id128**___**is**___**[allf**(3)](https://www.chedong.com/phpMan.php/man/allf/3/markdown) — APIs for processing 128-bit IDs
       **sd**___**id128**___**is**___**[null**(3)](https://www.chedong.com/phpMan.php/man/null/3/markdown) — APIs for processing 128-bit IDs
       **SD**___**ID128**___**[MAKE**(3)](https://www.chedong.com/phpMan.php/man/MAKE/3/markdown) — APIs for processing 128-bit IDs
       **SD**___**ID128**___**MAKE**___**[STR**(3)](https://www.chedong.com/phpMan.php/man/STR/3/markdown) — APIs for processing 128-bit IDs
       **SD**___**ID128**___**MAKE**___**UUID**___**[STR**(3)](https://www.chedong.com/phpMan.php/man/STR/3/markdown) — APIs for processing 128-bit IDs
       **SD**___**ID128**___**[NULL**(3)](https://www.chedong.com/phpMan.php/man/NULL/3/markdown) — APIs for processing 128-bit IDs
       **sd**___**id128**___**[randomize**(3)](https://www.chedong.com/phpMan.php/man/randomize/3/markdown) — Generate 128-bit IDs
       **sd**___**id128**___**[t**(3)](https://www.chedong.com/phpMan.php/man/t/3/markdown) — APIs for processing 128-bit IDs
       **sd**___**id128**___**to**___**[string**(3)](https://www.chedong.com/phpMan.php/man/string/3/markdown) — Format or parse 128-bit IDs as strings
       **SD**___**ID128**___**UUID**___**FORMAT**___**[STR**(3)](https://www.chedong.com/phpMan.php/man/STR/3/markdown) — APIs for processing 128-bit IDs
       **SD**___**[INFO**(3)](https://www.chedong.com/phpMan.php/man/INFO/3/markdown) — APIs for new-style daemons
       **sd**___**is**___**[fifo**(3)](https://www.chedong.com/phpMan.php/man/fifo/3/markdown) — Check the type of a file descriptor
       **sd**___**is**___**[mq**(3)](https://www.chedong.com/phpMan.php/man/mq/3/markdown) — Check the type of a file descriptor
       **sd**___**is**___**[socket**(3)](https://www.chedong.com/phpMan.php/man/socket/3/markdown) — Check the type of a file descriptor
       **sd**___**is**___**socket**___**[inet**(3)](https://www.chedong.com/phpMan.php/man/inet/3/markdown) — Check the type of a file descriptor
       **sd**___**is**___**socket**___**[sockaddr**(3)](https://www.chedong.com/phpMan.php/man/sockaddr/3/markdown) — Check the type of a file descriptor
       **sd**___**is**___**socket**___**[unix**(3)](https://www.chedong.com/phpMan.php/man/unix/3/markdown) — Check the type of a file descriptor
       **sd**___**is**___**[special**(3)](https://www.chedong.com/phpMan.php/man/special/3/markdown) — Check the type of a file descriptor
       **sd**___**[journal**(3)](https://www.chedong.com/phpMan.php/man/journal/3/markdown) — Open the system journal for reading
       **sd**___**journal**___**add**___**[conjunction**(3)](https://www.chedong.com/phpMan.php/man/conjunction/3/markdown) — Add or remove entry matches
       **sd**___**journal**___**add**___**[disjunction**(3)](https://www.chedong.com/phpMan.php/man/disjunction/3/markdown) — Add or remove entry matches
       **sd**___**journal**___**add**___**[match**(3)](https://www.chedong.com/phpMan.php/man/match/3/markdown) — Add or remove entry matches
       **SD**___**JOURNAL**___**ALL**___**[NAMESPACES**(3)](https://www.chedong.com/phpMan.php/man/NAMESPACES/3/markdown) — Open the system journal for reading
       **SD**___**JOURNAL**___**[APPEND**(3)](https://www.chedong.com/phpMan.php/man/APPEND/3/markdown) — Journal change notification interface
       **sd**___**journal**___**[close**(3)](https://www.chedong.com/phpMan.php/man/close/3/markdown) — Open the system journal for reading
       **SD**___**JOURNAL**___**CURRENT**___**[USER**(3)](https://www.chedong.com/phpMan.php/man/USER/3/markdown) — Open the system journal for reading
       **sd**___**journal**___**enumerate**___**available**___**[data**(3)](https://www.chedong.com/phpMan.php/man/data/3/markdown) — Read data fields from the current journal entry
       **sd**___**journal**___**enumerate**___**available**___**[unique**(3)](https://www.chedong.com/phpMan.php/man/unique/3/markdown) — Read unique data fields from the journal
       **sd**___**journal**___**enumerate**___**[data**(3)](https://www.chedong.com/phpMan.php/man/data/3/markdown) — Read data fields from the current journal entry
       **sd**___**journal**___**enumerate**___**[fields**(3)](https://www.chedong.com/phpMan.php/man/fields/3/markdown) — Read used field names from the journal
       **sd**___**journal**___**enumerate**___**[unique**(3)](https://www.chedong.com/phpMan.php/man/unique/3/markdown) — Read unique data fields from the journal
       **sd**___**journal**___**flush**___**[matches**(3)](https://www.chedong.com/phpMan.php/man/matches/3/markdown) — Add or remove entry matches
       **SD**___**JOURNAL**___**[FOREACH**(3)](https://www.chedong.com/phpMan.php/man/FOREACH/3/markdown) — Advance or set back the read pointer in the journal
       **SD**___**JOURNAL**___**FOREACH**___**[BACKWARDS**(3)](https://www.chedong.com/phpMan.php/man/BACKWARDS/3/markdown) — Advance or set back the read pointer in the journal
       **SD**___**JOURNAL**___**FOREACH**___**[DATA**(3)](https://www.chedong.com/phpMan.php/man/DATA/3/markdown) — Read data fields from the current journal entry
       **SD**___**JOURNAL**___**FOREACH**___**[FIELD**(3)](https://www.chedong.com/phpMan.php/man/FIELD/3/markdown) — Read used field names from the journal
       **SD**___**JOURNAL**___**FOREACH**___**[UNIQUE**(3)](https://www.chedong.com/phpMan.php/man/UNIQUE/3/markdown) — Read unique data fields from the journal
       **sd**___**journal**___**get**___**[catalog**(3)](https://www.chedong.com/phpMan.php/man/catalog/3/markdown) — Retrieve message catalog entry
       **sd**___**journal**___**get**___**catalog**___**for**___**message**___**[id**(3)](https://www.chedong.com/phpMan.php/man/id/3/markdown) — Retrieve message catalog entry
       **sd**___**journal**___**get**___**[cursor**(3)](https://www.chedong.com/phpMan.php/man/cursor/3/markdown) — Get cursor string for or test cursor string against the current
       journal entry
       **sd**___**journal**___**get**___**cutoff**___**monotonic**___**[usec**(3)](https://www.chedong.com/phpMan.php/man/usec/3/markdown) — Read cut-off timestamps from the current journal
       entry
       **sd**___**journal**___**get**___**cutoff**___**realtime**___**[usec**(3)](https://www.chedong.com/phpMan.php/man/usec/3/markdown) — Read cut-off timestamps from the current journal
       entry
       **sd**___**journal**___**get**___**[data**(3)](https://www.chedong.com/phpMan.php/man/data/3/markdown) — Read data fields from the current journal entry
       **sd**___**journal**___**get**___**data**___**[threshold**(3)](https://www.chedong.com/phpMan.php/man/threshold/3/markdown) — Read data fields from the current journal entry
       **sd**___**journal**___**get**___**[events**(3)](https://www.chedong.com/phpMan.php/man/events/3/markdown) — Journal change notification interface
       **sd**___**journal**___**get**___**[fd**(3)](https://www.chedong.com/phpMan.php/man/fd/3/markdown) — Journal change notification interface
       **sd**___**journal**___**get**___**monotonic**___**[usec**(3)](https://www.chedong.com/phpMan.php/man/usec/3/markdown) — Read timestamps from the current journal entry
       **sd**___**journal**___**get**___**realtime**___**[usec**(3)](https://www.chedong.com/phpMan.php/man/usec/3/markdown) — Read timestamps from the current journal entry
       **sd**___**journal**___**get**___**[timeout**(3)](https://www.chedong.com/phpMan.php/man/timeout/3/markdown) — Journal change notification interface
       **sd**___**journal**___**get**___**[usage**(3)](https://www.chedong.com/phpMan.php/man/usage/3/markdown) — Journal disk usage
       **sd**___**journal**___**has**___**persistent**___**[files**(3)](https://www.chedong.com/phpMan.php/man/files/3/markdown) — Query availability of runtime or persistent journal
       files
       **sd**___**journal**___**has**___**runtime**___**[files**(3)](https://www.chedong.com/phpMan.php/man/files/3/markdown) — Query availability of runtime or persistent journal files
       **SD**___**JOURNAL**___**INCLUDE**___**DEFAULT**___**[NAMESPACE**(3)](https://www.chedong.com/phpMan.php/man/NAMESPACE/3/markdown) — Open the system journal for reading
       **SD**___**JOURNAL**___**[INVALIDATE**(3)](https://www.chedong.com/phpMan.php/man/INVALIDATE/3/markdown) — Journal change notification interface
       **SD**___**JOURNAL**___**LOCAL**___**[ONLY**(3)](https://www.chedong.com/phpMan.php/man/ONLY/3/markdown) — Open the system journal for reading
       **sd**___**journal**___**[next**(3)](https://www.chedong.com/phpMan.php/man/next/3/markdown) — Advance or set back the read pointer in the journal
       **sd**___**journal**___**next**___**[skip**(3)](https://www.chedong.com/phpMan.php/man/skip/3/markdown) — Advance or set back the read pointer in the journal
       **SD**___**JOURNAL**___**[NOP**(3)](https://www.chedong.com/phpMan.php/man/NOP/3/markdown) — Journal change notification interface
       **sd**___**journal**___**[open**(3)](https://www.chedong.com/phpMan.php/man/open/3/markdown) — Open the system journal for reading
       **sd**___**journal**___**open**___**[directory**(3)](https://www.chedong.com/phpMan.php/man/directory/3/markdown) — Open the system journal for reading
       **sd**___**journal**___**open**___**directory**___**[fd**(3)](https://www.chedong.com/phpMan.php/man/fd/3/markdown) — Open the system journal for reading
       **sd**___**journal**___**open**___**[files**(3)](https://www.chedong.com/phpMan.php/man/files/3/markdown) — Open the system journal for reading
       **sd**___**journal**___**open**___**files**___**[fd**(3)](https://www.chedong.com/phpMan.php/man/fd/3/markdown) — Open the system journal for reading
       **sd**___**journal**___**open**___**[namespace**(3)](https://www.chedong.com/phpMan.php/man/namespace/3/markdown) — Open the system journal for reading
       **SD**___**JOURNAL**___**OS**___**[ROOT**(3)](https://www.chedong.com/phpMan.php/man/ROOT/3/markdown) — Open the system journal for reading
       **sd**___**journal**___**[perror**(3)](https://www.chedong.com/phpMan.php/man/perror/3/markdown) — Submit log entries to the journal
       **sd**___**journal**___**perror**___**with**___**[location**(3)](https://www.chedong.com/phpMan.php/man/location/3/markdown) — Submit log entries to the journal
       **sd**___**journal**___**[previous**(3)](https://www.chedong.com/phpMan.php/man/previous/3/markdown) — Advance or set back the read pointer in the journal
       **sd**___**journal**___**previous**___**[skip**(3)](https://www.chedong.com/phpMan.php/man/skip/3/markdown) — Advance or set back the read pointer in the journal
       **sd**___**journal**___**[print**(3)](https://www.chedong.com/phpMan.php/man/print/3/markdown) — Submit log entries to the journal
       **sd**___**journal**___**print**___**with**___**[location**(3)](https://www.chedong.com/phpMan.php/man/location/3/markdown) — Submit log entries to the journal
       **sd**___**journal**___**[printv**(3)](https://www.chedong.com/phpMan.php/man/printv/3/markdown) — Submit log entries to the journal
       **sd**___**journal**___**printv**___**with**___**[location**(3)](https://www.chedong.com/phpMan.php/man/location/3/markdown) — Submit log entries to the journal
       **sd**___**journal**___**[process**(3)](https://www.chedong.com/phpMan.php/man/process/3/markdown) — Journal change notification interface
       **sd**___**journal**___**query**___**[unique**(3)](https://www.chedong.com/phpMan.php/man/unique/3/markdown) — Read unique data fields from the journal
       **sd**___**journal**___**reliable**___**[fd**(3)](https://www.chedong.com/phpMan.php/man/fd/3/markdown) — Journal change notification interface
       **sd**___**journal**___**restart**___**[data**(3)](https://www.chedong.com/phpMan.php/man/data/3/markdown) — Read data fields from the current journal entry
       **sd**___**journal**___**restart**___**[fields**(3)](https://www.chedong.com/phpMan.php/man/fields/3/markdown) — Read used field names from the journal
       **sd**___**journal**___**restart**___**[unique**(3)](https://www.chedong.com/phpMan.php/man/unique/3/markdown) — Read unique data fields from the journal
       **SD**___**JOURNAL**___**RUNTIME**___**[ONLY**(3)](https://www.chedong.com/phpMan.php/man/ONLY/3/markdown) — Open the system journal for reading
       **sd**___**journal**___**seek**___**[cursor**(3)](https://www.chedong.com/phpMan.php/man/cursor/3/markdown) — Seek to a position in the journal
       **sd**___**journal**___**seek**___**[head**(3)](https://www.chedong.com/phpMan.php/man/head/3/markdown) — Seek to a position in the journal
       **sd**___**journal**___**seek**___**monotonic**___**[usec**(3)](https://www.chedong.com/phpMan.php/man/usec/3/markdown) — Seek to a position in the journal
       **sd**___**journal**___**seek**___**realtime**___**[usec**(3)](https://www.chedong.com/phpMan.php/man/usec/3/markdown) — Seek to a position in the journal
       **sd**___**journal**___**seek**___**[tail**(3)](https://www.chedong.com/phpMan.php/man/tail/3/markdown) — Seek to a position in the journal
       **sd**___**journal**___**[send**(3)](https://www.chedong.com/phpMan.php/man/send/3/markdown) — Submit log entries to the journal
       **sd**___**journal**___**send**___**with**___**[location**(3)](https://www.chedong.com/phpMan.php/man/location/3/markdown) — Submit log entries to the journal
       **sd**___**journal**___**[sendv**(3)](https://www.chedong.com/phpMan.php/man/sendv/3/markdown) — Submit log entries to the journal
       **sd**___**journal**___**sendv**___**with**___**[location**(3)](https://www.chedong.com/phpMan.php/man/location/3/markdown) — Submit log entries to the journal
       **sd**___**journal**___**set**___**data**___**[threshold**(3)](https://www.chedong.com/phpMan.php/man/threshold/3/markdown) — Read data fields from the current journal entry
       **sd**___**journal**___**stream**___**[fd**(3)](https://www.chedong.com/phpMan.php/man/fd/3/markdown) — Create log stream file descriptor to the journal
       **SD**___**JOURNAL**___**SUPPRESS**___**[LOCATION**(3)](https://www.chedong.com/phpMan.php/man/LOCATION/3/markdown) — Submit log entries to the journal
       **SD**___**JOURNAL**___**[SYSTEM**(3)](https://www.chedong.com/phpMan.php/man/SYSTEM/3/markdown) — Open the system journal for reading
       **sd**___**journal**___**test**___**[cursor**(3)](https://www.chedong.com/phpMan.php/man/cursor/3/markdown) — Get cursor string for or test cursor string against the current
       journal entry
       **sd**___**journal**___**[wait**(3)](https://www.chedong.com/phpMan.php/man/wait/3/markdown) — Journal change notification interface
       **sd**___**listen**___**[fds**(3)](https://www.chedong.com/phpMan.php/man/fds/3/markdown) — Check for file descriptors passed by the system manager
       **SD**___**LISTEN**___**FDS**___**[START**(3)](https://www.chedong.com/phpMan.php/man/START/3/markdown) — Check for file descriptors passed by the system manager
       **sd**___**listen**___**fds**___**with**___**[names**(3)](https://www.chedong.com/phpMan.php/man/names/3/markdown) — Check for file descriptors passed by the system manager
       **sd**___**login**___**[monitor**(3)](https://www.chedong.com/phpMan.php/man/monitor/3/markdown) — Monitor login sessions, seats, users and virtual machines/containers
       **sd**___**login**___**monitor**___**[flush**(3)](https://www.chedong.com/phpMan.php/man/flush/3/markdown) — Monitor login sessions, seats, users and virtual
       machines/containers
       **sd**___**login**___**monitor**___**get**___**[events**(3)](https://www.chedong.com/phpMan.php/man/events/3/markdown) — Monitor login sessions, seats, users and virtual
       machines/containers
       **sd**___**login**___**monitor**___**get**___**[fd**(3)](https://www.chedong.com/phpMan.php/man/fd/3/markdown) — Monitor login sessions, seats, users and virtual
       machines/containers
       **sd**___**login**___**monitor**___**get**___**[timeout**(3)](https://www.chedong.com/phpMan.php/man/timeout/3/markdown) — Monitor login sessions, seats, users and virtual
       machines/containers
       **sd**___**login**___**monitor**___**[new**(3)](https://www.chedong.com/phpMan.php/man/new/3/markdown) — Monitor login sessions, seats, users and virtual
       machines/containers
       **sd**___**login**___**monitor**___**[unref**(3)](https://www.chedong.com/phpMan.php/man/unref/3/markdown) — Monitor login sessions, seats, users and virtual
       machines/containers
       **sd**___**login**___**monitor**___**[unrefp**(3)](https://www.chedong.com/phpMan.php/man/unrefp/3/markdown) — Monitor login sessions, seats, users and virtual
       machines/containers
       **sd**___**machine**___**get**___**[class**(3)](https://www.chedong.com/phpMan.php/man/class/3/markdown) — Determine the class and network interface indices of a locally
       running virtual machine or container
       **sd**___**machine**___**get**___**[ifindices**(3)](https://www.chedong.com/phpMan.php/man/ifindices/3/markdown) — Determine the class and network interface indices of a locally
       running virtual machine or container
       **SD**___**[NOTICE**(3)](https://www.chedong.com/phpMan.php/man/NOTICE/3/markdown) — APIs for new-style daemons
       **sd**___**[notify**(3)](https://www.chedong.com/phpMan.php/man/notify/3/markdown) — Notify service manager about start-up completion and other service status
       changes
       **sd**___**notify**___**[barrier**(3)](https://www.chedong.com/phpMan.php/man/barrier/3/markdown) — Notify service manager about start-up completion and other service
       status changes
       **sd**___**[notifyf**(3)](https://www.chedong.com/phpMan.php/man/notifyf/3/markdown) — Notify service manager about start-up completion and other service status
       changes
       **sd**___**path**___**[lookup**(3)](https://www.chedong.com/phpMan.php/man/lookup/3/markdown) — Query well-known file system paths
       **sd**___**path**___**lookup**___**[strv**(3)](https://www.chedong.com/phpMan.php/man/strv/3/markdown) — Query well-known file system paths
       **sd**___**peer**___**get**___**[cgroup**(3)](https://www.chedong.com/phpMan.php/man/cgroup/3/markdown) — Determine the owner uid of the user unit or session, or the session,
       user unit, system unit, container/VM or slice that a specific PID or socket peer belongs to
       **sd**___**peer**___**get**___**machine**___**[name**(3)](https://www.chedong.com/phpMan.php/man/name/3/markdown) — Determine the owner uid of the user unit or session, or the
       session, user unit, system unit, container/VM or slice that a specific PID or socket peer
       belongs to
       **sd**___**peer**___**get**___**owner**___**[uid**(3)](https://www.chedong.com/phpMan.php/man/uid/3/markdown) — Determine the owner uid of the user unit or session, or the
       session, user unit, system unit, container/VM or slice that a specific PID or socket peer
       belongs to
       **sd**___**peer**___**get**___**[session**(3)](https://www.chedong.com/phpMan.php/man/session/3/markdown) — Determine the owner uid of the user unit or session, or the session,
       user unit, system unit, container/VM or slice that a specific PID or socket peer belongs to
       **sd**___**peer**___**get**___**[slice**(3)](https://www.chedong.com/phpMan.php/man/slice/3/markdown) — Determine the owner uid of the user unit or session, or the session,
       user unit, system unit, container/VM or slice that a specific PID or socket peer belongs to
       **sd**___**peer**___**get**___**[unit**(3)](https://www.chedong.com/phpMan.php/man/unit/3/markdown) — Determine the owner uid of the user unit or session, or the session,
       user unit, system unit, container/VM or slice that a specific PID or socket peer belongs to
       **sd**___**peer**___**get**___**user**___**[slice**(3)](https://www.chedong.com/phpMan.php/man/slice/3/markdown) — Determine the owner uid of the user unit or session, or the
       session, user unit, system unit, container/VM or slice that a specific PID or socket peer
       belongs to
       **sd**___**peer**___**get**___**user**___**[unit**(3)](https://www.chedong.com/phpMan.php/man/unit/3/markdown) — Determine the owner uid of the user unit or session, or the
       session, user unit, system unit, container/VM or slice that a specific PID or socket peer
       belongs to
       **sd**___**pid**___**get**___**[cgroup**(3)](https://www.chedong.com/phpMan.php/man/cgroup/3/markdown) — Determine the owner uid of the user unit or session, or the session,
       user unit, system unit, container/VM or slice that a specific PID or socket peer belongs to
       **sd**___**pid**___**get**___**machine**___**[name**(3)](https://www.chedong.com/phpMan.php/man/name/3/markdown) — Determine the owner uid of the user unit or session, or the
       session, user unit, system unit, container/VM or slice that a specific PID or socket peer
       belongs to
       **sd**___**pid**___**get**___**owner**___**[uid**(3)](https://www.chedong.com/phpMan.php/man/uid/3/markdown) — Determine the owner uid of the user unit or session, or the
       session, user unit, system unit, container/VM or slice that a specific PID or socket peer
       belongs to
       **sd**___**pid**___**get**___**[session**(3)](https://www.chedong.com/phpMan.php/man/session/3/markdown) — Determine the owner uid of the user unit or session, or the session,
       user unit, system unit, container/VM or slice that a specific PID or socket peer belongs to
       **sd**___**pid**___**get**___**[slice**(3)](https://www.chedong.com/phpMan.php/man/slice/3/markdown) — Determine the owner uid of the user unit or session, or the session,
       user unit, system unit, container/VM or slice that a specific PID or socket peer belongs to
       **sd**___**pid**___**get**___**[unit**(3)](https://www.chedong.com/phpMan.php/man/unit/3/markdown) — Determine the owner uid of the user unit or session, or the session,
       user unit, system unit, container/VM or slice that a specific PID or socket peer belongs to
       **sd**___**pid**___**get**___**user**___**[slice**(3)](https://www.chedong.com/phpMan.php/man/slice/3/markdown) — Determine the owner uid of the user unit or session, or the
       session, user unit, system unit, container/VM or slice that a specific PID or socket peer
       belongs to
       **sd**___**pid**___**get**___**user**___**[unit**(3)](https://www.chedong.com/phpMan.php/man/unit/3/markdown) — Determine the owner uid of the user unit or session, or the
       session, user unit, system unit, container/VM or slice that a specific PID or socket peer
       belongs to
       **sd**___**pid**___**[notify**(3)](https://www.chedong.com/phpMan.php/man/notify/3/markdown) — Notify service manager about start-up completion and other service status
       changes
       **sd**___**pid**___**notify**___**with**___**[fds**(3)](https://www.chedong.com/phpMan.php/man/fds/3/markdown) — Notify service manager about start-up completion and other
       service status changes
       **sd**___**pid**___**[notifyf**(3)](https://www.chedong.com/phpMan.php/man/notifyf/3/markdown) — Notify service manager about start-up completion and other service status
       changes
       **sd**___**seat**___**can**___**[graphical**(3)](https://www.chedong.com/phpMan.php/man/graphical/3/markdown) — Determine state of a specific seat
       **sd**___**seat**___**can**___**[tty**(3)](https://www.chedong.com/phpMan.php/man/tty/3/markdown) — Determine state of a specific seat
       **sd**___**seat**___**get**___**[active**(3)](https://www.chedong.com/phpMan.php/man/active/3/markdown) — Determine state of a specific seat
       **sd**___**seat**___**get**___**[sessions**(3)](https://www.chedong.com/phpMan.php/man/sessions/3/markdown) — Determine state of a specific seat
       **sd**___**session**___**get**___**[class**(3)](https://www.chedong.com/phpMan.php/man/class/3/markdown) — Determine state of a specific session
       **sd**___**session**___**get**___**[desktop**(3)](https://www.chedong.com/phpMan.php/man/desktop/3/markdown) — Determine state of a specific session
       **sd**___**session**___**get**___**[display**(3)](https://www.chedong.com/phpMan.php/man/display/3/markdown) — Determine state of a specific session
       **sd**___**session**___**get**___**remote**___**[host**(3)](https://www.chedong.com/phpMan.php/man/host/3/markdown) — Determine state of a specific session
       **sd**___**session**___**get**___**remote**___**[user**(3)](https://www.chedong.com/phpMan.php/man/user/3/markdown) — Determine state of a specific session
       **sd**___**session**___**get**___**[seat**(3)](https://www.chedong.com/phpMan.php/man/seat/3/markdown) — Determine state of a specific session
       **sd**___**session**___**get**___**[service**(3)](https://www.chedong.com/phpMan.php/man/service/3/markdown) — Determine state of a specific session
       **sd**___**session**___**get**___**[state**(3)](https://www.chedong.com/phpMan.php/man/state/3/markdown) — Determine state of a specific session
       **sd**___**session**___**get**___**[tty**(3)](https://www.chedong.com/phpMan.php/man/tty/3/markdown) — Determine state of a specific session
       **sd**___**session**___**get**___**[type**(3)](https://www.chedong.com/phpMan.php/man/type/3/markdown) — Determine state of a specific session
       **sd**___**session**___**get**___**[uid**(3)](https://www.chedong.com/phpMan.php/man/uid/3/markdown) — Determine state of a specific session
       **sd**___**session**___**get**___**[vt**(3)](https://www.chedong.com/phpMan.php/man/vt/3/markdown) — Determine state of a specific session
       **sd**___**session**___**is**___**[active**(3)](https://www.chedong.com/phpMan.php/man/active/3/markdown) — Determine state of a specific session
       **sd**___**session**___**is**___**[remote**(3)](https://www.chedong.com/phpMan.php/man/remote/3/markdown) — Determine state of a specific session
       **sd**___**uid**___**get**___**[display**(3)](https://www.chedong.com/phpMan.php/man/display/3/markdown) — Determine login state of a specific Unix user ID
       **sd**___**uid**___**get**___**[seats**(3)](https://www.chedong.com/phpMan.php/man/seats/3/markdown) — Determine login state of a specific Unix user ID
       **sd**___**uid**___**get**___**[sessions**(3)](https://www.chedong.com/phpMan.php/man/sessions/3/markdown) — Determine login state of a specific Unix user ID
       **sd**___**uid**___**get**___**[state**(3)](https://www.chedong.com/phpMan.php/man/state/3/markdown) — Determine login state of a specific Unix user ID
       **sd**___**uid**___**is**___**on**___**[seat**(3)](https://www.chedong.com/phpMan.php/man/seat/3/markdown) — Determine login state of a specific Unix user ID
       **SD**___**[WARNING**(3)](https://www.chedong.com/phpMan.php/man/WARNING/3/markdown) — APIs for new-style daemons
       **sd**___**watchdog**___**[enabled**(3)](https://www.chedong.com/phpMan.php/man/enabled/3/markdown) — Check whether the service manager expects watchdog keep-alive
       notifications from a service
       [**shutdown**(8)](https://www.chedong.com/phpMan.php/man/shutdown/8/markdown) — Halt, power-off or reboot the machine
       [**sleep.conf.d**(5)](https://www.chedong.com/phpMan.php/man/sleep.conf.d/5/markdown) — Suspend and hibernation configuration file
       [**sysctl.d**(5)](https://www.chedong.com/phpMan.php/man/sysctl.d/5/markdown) — Configure kernel parameters at boot
       [**system.conf.d**(5)](https://www.chedong.com/phpMan.php/man/system.conf.d/5/markdown) — System and session service manager configuration files
       [**systemctl**(1)](https://www.chedong.com/phpMan.php/man/systemctl/1/markdown) — Control the systemd system and service manager
       [**systemd**(1)](https://www.chedong.com/phpMan.php/man/systemd/1/markdown) — systemd system and service manager
       [**systemd-analyze**(1)](https://www.chedong.com/phpMan.php/man/systemd-analyze/1/markdown) — Analyze and debug system manager
       [**systemd-ask-password**(1)](https://www.chedong.com/phpMan.php/man/systemd-ask-password/1/markdown) — Query the user for a system password
       [**systemd-ask-password-console.path**(8)](https://www.chedong.com/phpMan.php/man/systemd-ask-password-console.path/8/markdown) — Query the user for system passwords on the console and
       via wall
       [**systemd-ask-password-console.service**(8)](https://www.chedong.com/phpMan.php/man/systemd-ask-password-console.service/8/markdown) — Query the user for system passwords on the console
       and via wall
       [**systemd-ask-password-wall.path**(8)](https://www.chedong.com/phpMan.php/man/systemd-ask-password-wall.path/8/markdown) — Query the user for system passwords on the console and
       via wall
       [**systemd-ask-password-wall.service**(8)](https://www.chedong.com/phpMan.php/man/systemd-ask-password-wall.service/8/markdown) — Query the user for system passwords on the console and
       via wall
       [**systemd-backlight**(8)](https://www.chedong.com/phpMan.php/man/systemd-backlight/8/markdown) — Load and save the display backlight brightness at boot and shutdown
       **systemd-backlight@[.service**(8)](https://www.chedong.com/phpMan.php/man/.service/8/markdown) — Load and save the display backlight brightness at boot and
       shutdown
       [**systemd-binfmt**(8)](https://www.chedong.com/phpMan.php/man/systemd-binfmt/8/markdown) — Configure additional binary formats for executables at boot
       [**systemd-binfmt.service**(8)](https://www.chedong.com/phpMan.php/man/systemd-binfmt.service/8/markdown) — Configure additional binary formats for executables at boot
       [**systemd-bless-boot**(8)](https://www.chedong.com/phpMan.php/man/systemd-bless-boot/8/markdown) — Mark current boot process as successful
       [**systemd-bless-boot-generator**(8)](https://www.chedong.com/phpMan.php/man/systemd-bless-boot-generator/8/markdown) — Pull systemd-bless-boot.service into the initial boot
       transaction when boot counting is in effect
       [**systemd-bless-boot.service**(8)](https://www.chedong.com/phpMan.php/man/systemd-bless-boot.service/8/markdown) — Mark current boot process as successful
       [**systemd-boot**(7)](https://www.chedong.com/phpMan.php/man/systemd-boot/7/markdown) — A simple UEFI boot manager
       [**systemd-boot-check-no-failures**(8)](https://www.chedong.com/phpMan.php/man/systemd-boot-check-no-failures/8/markdown) — verify that the system booted up cleanly
       [**systemd-boot-check-no-failures.service**(8)](https://www.chedong.com/phpMan.php/man/systemd-boot-check-no-failures.service/8/markdown) — verify that the system booted up cleanly
       [**systemd-boot-system-token.service**(8)](https://www.chedong.com/phpMan.php/man/systemd-boot-system-token.service/8/markdown) — Generate an initial boot loader system token and
       random seed
       [**systemd-cat**(1)](https://www.chedong.com/phpMan.php/man/systemd-cat/1/markdown) — Connect a pipeline or program's output with the journal
       [**systemd-cgls**(1)](https://www.chedong.com/phpMan.php/man/systemd-cgls/1/markdown) — Recursively show control group contents
       [**systemd-cgtop**(1)](https://www.chedong.com/phpMan.php/man/systemd-cgtop/1/markdown) — Show top control groups by their resource usage
       [**systemd-coredump**(8)](https://www.chedong.com/phpMan.php/man/systemd-coredump/8/markdown) — Acquire, save and process core dumps
       [**systemd-coredump.socket**(8)](https://www.chedong.com/phpMan.php/man/systemd-coredump.socket/8/markdown) — Acquire, save and process core dumps
       **systemd-coredump@[.service**(8)](https://www.chedong.com/phpMan.php/man/.service/8/markdown) — Acquire, save and process core dumps
       [**systemd-cryptenroll**(1)](https://www.chedong.com/phpMan.php/man/systemd-cryptenroll/1/markdown) — Enroll PKCS#11, FIDO2, TPM2 token/devices to LUKS2 encrypted volumes
       [**systemd-cryptsetup**(8)](https://www.chedong.com/phpMan.php/man/systemd-cryptsetup/8/markdown) — Full disk decryption logic
       [**systemd-cryptsetup-generator**(8)](https://www.chedong.com/phpMan.php/man/systemd-cryptsetup-generator/8/markdown) — Unit generator for /etc/crypttab
       **systemd-cryptsetup@[.service**(8)](https://www.chedong.com/phpMan.php/man/.service/8/markdown) — Full disk decryption logic
       [**systemd-debug-generator**(8)](https://www.chedong.com/phpMan.php/man/systemd-debug-generator/8/markdown) — Generator for enabling a runtime debug shell and masking
       specific units at boot
       [**systemd-delta**(1)](https://www.chedong.com/phpMan.php/man/systemd-delta/1/markdown) — Find overridden configuration files
       [**systemd-detect-virt**(1)](https://www.chedong.com/phpMan.php/man/systemd-detect-virt/1/markdown) — Detect execution in a virtualized environment
       [**systemd-dissect**(1)](https://www.chedong.com/phpMan.php/man/systemd-dissect/1/markdown) — Dissect file system OS images
       [**systemd-environment-d-generator**(8)](https://www.chedong.com/phpMan.php/man/systemd-environment-d-generator/8/markdown) — Load variables specified by environment.d
       [**systemd-escape**(1)](https://www.chedong.com/phpMan.php/man/systemd-escape/1/markdown) — Escape strings for usage in systemd unit names
       [**systemd-fsck**(8)](https://www.chedong.com/phpMan.php/man/systemd-fsck/8/markdown) — File system checker logic
       [**systemd-fsck-root.service**(8)](https://www.chedong.com/phpMan.php/man/systemd-fsck-root.service/8/markdown) — File system checker logic
       **systemd-fsck@[.service**(8)](https://www.chedong.com/phpMan.php/man/.service/8/markdown) — File system checker logic
       [**systemd-fsckd**(8)](https://www.chedong.com/phpMan.php/man/systemd-fsckd/8/markdown) — File system check progress reporting
       [**systemd-fsckd.service**(8)](https://www.chedong.com/phpMan.php/man/systemd-fsckd.service/8/markdown) — File system check progress reporting
       [**systemd-fsckd.socket**(8)](https://www.chedong.com/phpMan.php/man/systemd-fsckd.socket/8/markdown) — File system check progress reporting
       [**systemd-fstab-generator**(8)](https://www.chedong.com/phpMan.php/man/systemd-fstab-generator/8/markdown) — Unit generator for /etc/fstab
       [**systemd-getty-generator**(8)](https://www.chedong.com/phpMan.php/man/systemd-getty-generator/8/markdown) — Generator for enabling getty instances on the console
       [**systemd-gpt-auto-generator**(8)](https://www.chedong.com/phpMan.php/man/systemd-gpt-auto-generator/8/markdown) — Generator for automatically discovering and mounting root,
       /home/ , /srv/ , /var/ and /var/tmp/ partitions, as well as discovering and enabling swap
       partitions, based on GPT partition type GUIDs
       [**systemd-growfs**(8)](https://www.chedong.com/phpMan.php/man/systemd-growfs/8/markdown) — Creating and growing file systems on demand
       **systemd-growfs@[.service**(8)](https://www.chedong.com/phpMan.php/man/.service/8/markdown) — Creating and growing file systems on demand
       [**systemd-halt.service**(8)](https://www.chedong.com/phpMan.php/man/systemd-halt.service/8/markdown) — System shutdown logic
       [**systemd-hibernate-resume**(8)](https://www.chedong.com/phpMan.php/man/systemd-hibernate-resume/8/markdown) — Resume from hibernation
       [**systemd-hibernate-resume-generator**(8)](https://www.chedong.com/phpMan.php/man/systemd-hibernate-resume-generator/8/markdown) — Unit generator for resume= kernel parameter
       **systemd-hibernate-resume@[.service**(8)](https://www.chedong.com/phpMan.php/man/.service/8/markdown) — Resume from hibernation
       [**systemd-hibernate.service**(8)](https://www.chedong.com/phpMan.php/man/systemd-hibernate.service/8/markdown) — System sleep state logic
       [**systemd-hostnamed**(8)](https://www.chedong.com/phpMan.php/man/systemd-hostnamed/8/markdown) — Daemon to control system hostname from programs
       [**systemd-hostnamed.service**(8)](https://www.chedong.com/phpMan.php/man/systemd-hostnamed.service/8/markdown) — Daemon to control system hostname from programs
       [**systemd-hwdb**(8)](https://www.chedong.com/phpMan.php/man/systemd-hwdb/8/markdown) — hardware database management tool
       [**systemd-hybrid-sleep.service**(8)](https://www.chedong.com/phpMan.php/man/systemd-hybrid-sleep.service/8/markdown) — System sleep state logic
       [**systemd-id128**(1)](https://www.chedong.com/phpMan.php/man/systemd-id128/1/markdown) — Generate and print sd-128 identifiers
       [**systemd-importd**(8)](https://www.chedong.com/phpMan.php/man/systemd-importd/8/markdown) — VM and container image import and export service
       [**systemd-importd.service**(8)](https://www.chedong.com/phpMan.php/man/systemd-importd.service/8/markdown) — VM and container image import and export service
       [**systemd-inhibit**(1)](https://www.chedong.com/phpMan.php/man/systemd-inhibit/1/markdown) — Execute a program with an inhibition lock taken
       [**systemd-initctl**(8)](https://www.chedong.com/phpMan.php/man/systemd-initctl/8/markdown) — /dev/initctl compatibility
       [**systemd-initctl.service**(8)](https://www.chedong.com/phpMan.php/man/systemd-initctl.service/8/markdown) — /dev/initctl compatibility
       [**systemd-initctl.socket**(8)](https://www.chedong.com/phpMan.php/man/systemd-initctl.socket/8/markdown) — /dev/initctl compatibility
       [**systemd-journal-gatewayd**(8)](https://www.chedong.com/phpMan.php/man/systemd-journal-gatewayd/8/markdown) — HTTP server for journal events
       [**systemd-journal-gatewayd.service**(8)](https://www.chedong.com/phpMan.php/man/systemd-journal-gatewayd.service/8/markdown) — HTTP server for journal events
       [**systemd-journal-gatewayd.socket**(8)](https://www.chedong.com/phpMan.php/man/systemd-journal-gatewayd.socket/8/markdown) — HTTP server for journal events
       [**systemd-journal-remote**(8)](https://www.chedong.com/phpMan.php/man/systemd-journal-remote/8/markdown) — Receive journal messages over the network
       [**systemd-journal-remote.service**(8)](https://www.chedong.com/phpMan.php/man/systemd-journal-remote.service/8/markdown) — Receive journal messages over the network
       [**systemd-journal-remote.socket**(8)](https://www.chedong.com/phpMan.php/man/systemd-journal-remote.socket/8/markdown) — Receive journal messages over the network
       [**systemd-journal-upload**(8)](https://www.chedong.com/phpMan.php/man/systemd-journal-upload/8/markdown) — Send journal messages over the network
       [**systemd-journal-upload.service**(8)](https://www.chedong.com/phpMan.php/man/systemd-journal-upload.service/8/markdown) — Send journal messages over the network
       [**systemd-journald**(8)](https://www.chedong.com/phpMan.php/man/systemd-journald/8/markdown) — Journal service
       [**systemd-journald-audit.socket**(8)](https://www.chedong.com/phpMan.php/man/systemd-journald-audit.socket/8/markdown) — Journal service
       [**systemd-journald-dev-log.socket**(8)](https://www.chedong.com/phpMan.php/man/systemd-journald-dev-log.socket/8/markdown) — Journal service
       **systemd-journald-varlink@[.socket**(8)](https://www.chedong.com/phpMan.php/man/.socket/8/markdown) — Journal service
       [**systemd-journald.service**(8)](https://www.chedong.com/phpMan.php/man/systemd-journald.service/8/markdown) — Journal service
       [**systemd-journald.socket**(8)](https://www.chedong.com/phpMan.php/man/systemd-journald.socket/8/markdown) — Journal service
       **systemd-journald@[.service**(8)](https://www.chedong.com/phpMan.php/man/.service/8/markdown) — Journal service
       **systemd-journald@[.socket**(8)](https://www.chedong.com/phpMan.php/man/.socket/8/markdown) — Journal service
       [**systemd-kexec.service**(8)](https://www.chedong.com/phpMan.php/man/systemd-kexec.service/8/markdown) — System shutdown logic
       [**systemd-localed**(8)](https://www.chedong.com/phpMan.php/man/systemd-localed/8/markdown) — Locale bus mechanism
       [**systemd-localed.service**(8)](https://www.chedong.com/phpMan.php/man/systemd-localed.service/8/markdown) — Locale bus mechanism
       [**systemd-logind**(8)](https://www.chedong.com/phpMan.php/man/systemd-logind/8/markdown) — Login manager
       [**systemd-logind.service**(8)](https://www.chedong.com/phpMan.php/man/systemd-logind.service/8/markdown) — Login manager
       [**systemd-machine-id-commit.service**(8)](https://www.chedong.com/phpMan.php/man/systemd-machine-id-commit.service/8/markdown) — Commit a transient machine ID to disk
       [**systemd-machine-id-setup**(1)](https://www.chedong.com/phpMan.php/man/systemd-machine-id-setup/1/markdown) — Initialize the machine ID in /etc/machine-id
       [**systemd-machined**(8)](https://www.chedong.com/phpMan.php/man/systemd-machined/8/markdown) — Virtual machine and container registration manager
       [**systemd-machined.service**(8)](https://www.chedong.com/phpMan.php/man/systemd-machined.service/8/markdown) — Virtual machine and container registration manager
       [**systemd-makefs**(8)](https://www.chedong.com/phpMan.php/man/systemd-makefs/8/markdown) — Creating and growing file systems on demand
       **systemd-makefs@[.service**(8)](https://www.chedong.com/phpMan.php/man/.service/8/markdown) — Creating and growing file systems on demand
       **systemd-mkswap@[.service**(8)](https://www.chedong.com/phpMan.php/man/.service/8/markdown) — Creating and growing file systems on demand
       [**systemd-modules-load**(8)](https://www.chedong.com/phpMan.php/man/systemd-modules-load/8/markdown) — Load kernel modules at boot
       [**systemd-modules-load.service**(8)](https://www.chedong.com/phpMan.php/man/systemd-modules-load.service/8/markdown) — Load kernel modules at boot
       [**systemd-mount**(1)](https://www.chedong.com/phpMan.php/man/systemd-mount/1/markdown) — Establish and destroy transient mount or auto-mount points
       [**systemd-network-generator**(8)](https://www.chedong.com/phpMan.php/man/systemd-network-generator/8/markdown) — Generate network configuration from the kernel command line
       [**systemd-network-generator.service**(8)](https://www.chedong.com/phpMan.php/man/systemd-network-generator.service/8/markdown) — Generate network configuration from the kernel command
       line
       [**systemd-networkd**(8)](https://www.chedong.com/phpMan.php/man/systemd-networkd/8/markdown) — Network manager
       [**systemd-networkd-wait-online**(8)](https://www.chedong.com/phpMan.php/man/systemd-networkd-wait-online/8/markdown) — Wait for network to come online
       [**systemd-networkd-wait-online.service**(8)](https://www.chedong.com/phpMan.php/man/systemd-networkd-wait-online.service/8/markdown) — Wait for network to come online
       [**systemd-networkd.service**(8)](https://www.chedong.com/phpMan.php/man/systemd-networkd.service/8/markdown) — Network manager
       [**systemd-notify**(1)](https://www.chedong.com/phpMan.php/man/systemd-notify/1/markdown) — Notify service manager about start-up completion and other daemon status
       changes
       [**systemd-nspawn**(1)](https://www.chedong.com/phpMan.php/man/systemd-nspawn/1/markdown) — Spawn a command or OS in a light-weight container
       [**systemd-oomd**(8)](https://www.chedong.com/phpMan.php/man/systemd-oomd/8/markdown) — A userspace out-of-memory (OOM) killer
       [**systemd-oomd.service**(8)](https://www.chedong.com/phpMan.php/man/systemd-oomd.service/8/markdown) — A userspace out-of-memory (OOM) killer
       [**systemd-path**(1)](https://www.chedong.com/phpMan.php/man/systemd-path/1/markdown) — List and query system and user paths
       [**systemd-portabled**(8)](https://www.chedong.com/phpMan.php/man/systemd-portabled/8/markdown) — Portable service manager
       [**systemd-portabled.service**(8)](https://www.chedong.com/phpMan.php/man/systemd-portabled.service/8/markdown) — Portable service manager
       [**systemd-poweroff.service**(8)](https://www.chedong.com/phpMan.php/man/systemd-poweroff.service/8/markdown) — System shutdown logic
       [**systemd-pstore**(8)](https://www.chedong.com/phpMan.php/man/systemd-pstore/8/markdown) — A service to archive contents of pstore
       [**systemd-pstore.service**(8)](https://www.chedong.com/phpMan.php/man/systemd-pstore.service/8/markdown) — A service to archive contents of pstore
       [**systemd-quotacheck**(8)](https://www.chedong.com/phpMan.php/man/systemd-quotacheck/8/markdown) — File system quota checker logic
       [**systemd-quotacheck.service**(8)](https://www.chedong.com/phpMan.php/man/systemd-quotacheck.service/8/markdown) — File system quota checker logic
       [**systemd-random-seed**(8)](https://www.chedong.com/phpMan.php/man/systemd-random-seed/8/markdown) — Load and save the system random seed at boot and shutdown
       [**systemd-random-seed.service**(8)](https://www.chedong.com/phpMan.php/man/systemd-random-seed.service/8/markdown) — Load and save the system random seed at boot and shutdown
       [**systemd-rc-local-generator**(8)](https://www.chedong.com/phpMan.php/man/systemd-rc-local-generator/8/markdown) — Compatibility generator and service to start /etc/rc.local
       during boot
       [**systemd-reboot.service**(8)](https://www.chedong.com/phpMan.php/man/systemd-reboot.service/8/markdown) — System shutdown logic
       [**systemd-remount-fs**(8)](https://www.chedong.com/phpMan.php/man/systemd-remount-fs/8/markdown) — Remount root and kernel file systems
       [**systemd-remount-fs.service**(8)](https://www.chedong.com/phpMan.php/man/systemd-remount-fs.service/8/markdown) — Remount root and kernel file systems
       [**systemd-repart**(8)](https://www.chedong.com/phpMan.php/man/systemd-repart/8/markdown) — Automatically grow and add partitions
       [**systemd-repart.service**(8)](https://www.chedong.com/phpMan.php/man/systemd-repart.service/8/markdown) — Automatically grow and add partitions
       [**systemd-resolved**(8)](https://www.chedong.com/phpMan.php/man/systemd-resolved/8/markdown) — Network Name Resolution manager
       [**systemd-resolved.service**(8)](https://www.chedong.com/phpMan.php/man/systemd-resolved.service/8/markdown) — Network Name Resolution manager
       [**systemd-rfkill**(8)](https://www.chedong.com/phpMan.php/man/systemd-rfkill/8/markdown) — Load and save the RF kill switch state at boot and change
       [**systemd-rfkill.service**(8)](https://www.chedong.com/phpMan.php/man/systemd-rfkill.service/8/markdown) — Load and save the RF kill switch state at boot and change
       [**systemd-rfkill.socket**(8)](https://www.chedong.com/phpMan.php/man/systemd-rfkill.socket/8/markdown) — Load and save the RF kill switch state at boot and change
       [**systemd-run**(1)](https://www.chedong.com/phpMan.php/man/systemd-run/1/markdown) — Run programs in transient scope units, service units, or path-, socket-, or
       timer-triggered service units
       [**systemd-run-generator**(8)](https://www.chedong.com/phpMan.php/man/systemd-run-generator/8/markdown) — Generator for invoking commands specified on the kernel command
       line as system service
       [**systemd-shutdown**(8)](https://www.chedong.com/phpMan.php/man/systemd-shutdown/8/markdown) — System shutdown logic
       [**systemd-sleep**(8)](https://www.chedong.com/phpMan.php/man/systemd-sleep/8/markdown) — System sleep state logic
       [**systemd-sleep.conf**(5)](https://www.chedong.com/phpMan.php/man/systemd-sleep.conf/5/markdown) — Suspend and hibernation configuration file
       [**systemd-socket-activate**(1)](https://www.chedong.com/phpMan.php/man/systemd-socket-activate/1/markdown) — Test socket activation of daemons
       [**systemd-socket-proxyd**(8)](https://www.chedong.com/phpMan.php/man/systemd-socket-proxyd/8/markdown) — Bidirectionally proxy local sockets to another (possibly remote)
       socket
       [**systemd-suspend-then-hibernate.service**(8)](https://www.chedong.com/phpMan.php/man/systemd-suspend-then-hibernate.service/8/markdown) — System sleep state logic
       [**systemd-suspend.service**(8)](https://www.chedong.com/phpMan.php/man/systemd-suspend.service/8/markdown) — System sleep state logic
       [**systemd-sysctl**(8)](https://www.chedong.com/phpMan.php/man/systemd-sysctl/8/markdown) — Configure kernel parameters at boot
       [**systemd-sysctl.service**(8)](https://www.chedong.com/phpMan.php/man/systemd-sysctl.service/8/markdown) — Configure kernel parameters at boot
       [**systemd-sysext**(8)](https://www.chedong.com/phpMan.php/man/systemd-sysext/8/markdown) — Activates System Extension Images
       [**systemd-sysext.service**(8)](https://www.chedong.com/phpMan.php/man/systemd-sysext.service/8/markdown) — Activates System Extension Images
       [**systemd-system-update-generator**(8)](https://www.chedong.com/phpMan.php/man/systemd-system-update-generator/8/markdown) — Generator for redirecting boot to offline update mode
       [**systemd-system.conf**(5)](https://www.chedong.com/phpMan.php/man/systemd-system.conf/5/markdown) — System and session service manager configuration files
       [**systemd-sysusers**(8)](https://www.chedong.com/phpMan.php/man/systemd-sysusers/8/markdown) — Allocate system users and groups
       [**systemd-sysusers.service**(8)](https://www.chedong.com/phpMan.php/man/systemd-sysusers.service/8/markdown) — Allocate system users and groups
       [**systemd-sysv-generator**(8)](https://www.chedong.com/phpMan.php/man/systemd-sysv-generator/8/markdown) — Unit generator for SysV init scripts
       [**systemd-time-wait-sync**(8)](https://www.chedong.com/phpMan.php/man/systemd-time-wait-sync/8/markdown) — Wait until kernel time is synchronized
       [**systemd-time-wait-sync.service**(8)](https://www.chedong.com/phpMan.php/man/systemd-time-wait-sync.service/8/markdown) — Wait until kernel time is synchronized
       [**systemd-timedated**(8)](https://www.chedong.com/phpMan.php/man/systemd-timedated/8/markdown) — Time and date bus mechanism
       [**systemd-timedated.service**(8)](https://www.chedong.com/phpMan.php/man/systemd-timedated.service/8/markdown) — Time and date bus mechanism
       [**systemd-timesyncd**(8)](https://www.chedong.com/phpMan.php/man/systemd-timesyncd/8/markdown) — Network Time Synchronization
       [**systemd-timesyncd.service**(8)](https://www.chedong.com/phpMan.php/man/systemd-timesyncd.service/8/markdown) — Network Time Synchronization
       [**systemd-tmpfiles**(8)](https://www.chedong.com/phpMan.php/man/systemd-tmpfiles/8/markdown) — Creates, deletes and cleans up volatile and temporary files and
       directories
       [**systemd-tmpfiles-clean.service**(8)](https://www.chedong.com/phpMan.php/man/systemd-tmpfiles-clean.service/8/markdown) — Creates, deletes and cleans up volatile and temporary
       files and directories
       [**systemd-tmpfiles-clean.timer**(8)](https://www.chedong.com/phpMan.php/man/systemd-tmpfiles-clean.timer/8/markdown) — Creates, deletes and cleans up volatile and temporary files
       and directories
       [**systemd-tmpfiles-setup-dev.service**(8)](https://www.chedong.com/phpMan.php/man/systemd-tmpfiles-setup-dev.service/8/markdown) — Creates, deletes and cleans up volatile and temporary
       files and directories
       [**systemd-tmpfiles-setup.service**(8)](https://www.chedong.com/phpMan.php/man/systemd-tmpfiles-setup.service/8/markdown) — Creates, deletes and cleans up volatile and temporary
       files and directories
       [**systemd-tty-ask-password-agent**(1)](https://www.chedong.com/phpMan.php/man/systemd-tty-ask-password-agent/1/markdown) — List or process pending systemd password requests
       [**systemd-udev-settle.service**(8)](https://www.chedong.com/phpMan.php/man/systemd-udev-settle.service/8/markdown) — Wait for all pending udev events to be handled
       [**systemd-udevd**(8)](https://www.chedong.com/phpMan.php/man/systemd-udevd/8/markdown) — Device event managing daemon
       [**systemd-udevd-control.socket**(8)](https://www.chedong.com/phpMan.php/man/systemd-udevd-control.socket/8/markdown) — Device event managing daemon
       [**systemd-udevd-kernel.socket**(8)](https://www.chedong.com/phpMan.php/man/systemd-udevd-kernel.socket/8/markdown) — Device event managing daemon
       [**systemd-udevd.service**(8)](https://www.chedong.com/phpMan.php/man/systemd-udevd.service/8/markdown) — Device event managing daemon
       [**systemd-umount**(1)](https://www.chedong.com/phpMan.php/man/systemd-umount/1/markdown) — Establish and destroy transient mount or auto-mount points
       [**systemd-update-done**(8)](https://www.chedong.com/phpMan.php/man/systemd-update-done/8/markdown) — Mark /etc/ and /var/ fully updated
       [**systemd-update-done.service**(8)](https://www.chedong.com/phpMan.php/man/systemd-update-done.service/8/markdown) — Mark /etc/ and /var/ fully updated
       [**systemd-update-utmp**(8)](https://www.chedong.com/phpMan.php/man/systemd-update-utmp/8/markdown) — Write audit and utmp updates at bootup, runlevel changes and
       shutdown
       [**systemd-update-utmp-runlevel.service**(8)](https://www.chedong.com/phpMan.php/man/systemd-update-utmp-runlevel.service/8/markdown) — Write audit and utmp updates at bootup, runlevel
       changes and shutdown
       [**systemd-update-utmp.service**(8)](https://www.chedong.com/phpMan.php/man/systemd-update-utmp.service/8/markdown) — Write audit and utmp updates at bootup, runlevel changes and
       shutdown
       [**systemd-user-runtime-dir**(5)](https://www.chedong.com/phpMan.php/man/systemd-user-runtime-dir/5/markdown) — System units to start the user manager
       [**systemd-user-sessions**(8)](https://www.chedong.com/phpMan.php/man/systemd-user-sessions/8/markdown) — Permit user logins after boot, prohibit user logins at shutdown
       [**systemd-user-sessions.service**(8)](https://www.chedong.com/phpMan.php/man/systemd-user-sessions.service/8/markdown) — Permit user logins after boot, prohibit user logins at
       shutdown
       [**systemd-user.conf**(5)](https://www.chedong.com/phpMan.php/man/systemd-user.conf/5/markdown) — System and session service manager configuration files
       [**systemd-veritysetup**(8)](https://www.chedong.com/phpMan.php/man/systemd-veritysetup/8/markdown) — Disk verity protection logic
       [**systemd-veritysetup-generator**(8)](https://www.chedong.com/phpMan.php/man/systemd-veritysetup-generator/8/markdown) — Unit generator for verity protected block devices
       **systemd-veritysetup@[.service**(8)](https://www.chedong.com/phpMan.php/man/.service/8/markdown) — Disk verity protection logic
       [**systemd-volatile-root**(8)](https://www.chedong.com/phpMan.php/man/systemd-volatile-root/8/markdown) — Make the root file system volatile
       [**systemd-volatile-root.service**(8)](https://www.chedong.com/phpMan.php/man/systemd-volatile-root.service/8/markdown) — Make the root file system volatile
       [**systemd-xdg-autostart-generator**(8)](https://www.chedong.com/phpMan.php/man/systemd-xdg-autostart-generator/8/markdown) — User unit generator for XDG autostart files
       [**systemd.automount**(5)](https://www.chedong.com/phpMan.php/man/systemd.automount/5/markdown) — Automount unit configuration
       [**systemd.device**(5)](https://www.chedong.com/phpMan.php/man/systemd.device/5/markdown) — Device unit configuration
       [**systemd.directives**(7)](https://www.chedong.com/phpMan.php/man/systemd.directives/7/markdown) — Index of configuration directives
       [**systemd.dnssd**(5)](https://www.chedong.com/phpMan.php/man/systemd.dnssd/5/markdown) — DNS-SD configuration
       [**systemd.environment-generator**(7)](https://www.chedong.com/phpMan.php/man/systemd.environment-generator/7/markdown) — systemd environment file generators
       [**systemd.exec**(5)](https://www.chedong.com/phpMan.php/man/systemd.exec/5/markdown) — Execution environment configuration
       [**systemd.generator**(7)](https://www.chedong.com/phpMan.php/man/systemd.generator/7/markdown) — systemd unit generators
       [**systemd.journal-fields**(7)](https://www.chedong.com/phpMan.php/man/systemd.journal-fields/7/markdown) — Special journal fields
       [**systemd.kill**(5)](https://www.chedong.com/phpMan.php/man/systemd.kill/5/markdown) — Process killing procedure configuration
       [**systemd.link**(5)](https://www.chedong.com/phpMan.php/man/systemd.link/5/markdown) — Network device configuration
       [**systemd.mount**(5)](https://www.chedong.com/phpMan.php/man/systemd.mount/5/markdown) — Mount unit configuration
       [**systemd.negative**(5)](https://www.chedong.com/phpMan.php/man/systemd.negative/5/markdown) — DNSSEC trust anchor configuration files
       [**systemd.net-naming-scheme**(7)](https://www.chedong.com/phpMan.php/man/systemd.net-naming-scheme/7/markdown) — Network device naming schemes
       [**systemd.netdev**(5)](https://www.chedong.com/phpMan.php/man/systemd.netdev/5/markdown) — Virtual Network Device configuration
       [**systemd.network**(5)](https://www.chedong.com/phpMan.php/man/systemd.network/5/markdown) — Network configuration
       [**systemd.nspawn**(5)](https://www.chedong.com/phpMan.php/man/systemd.nspawn/5/markdown) — Container settings
       [**systemd.offline-updates**(7)](https://www.chedong.com/phpMan.php/man/systemd.offline-updates/7/markdown) — Implementation of offline updates in systemd
       [**systemd.path**(5)](https://www.chedong.com/phpMan.php/man/systemd.path/5/markdown) — Path unit configuration
       [**systemd.positive**(5)](https://www.chedong.com/phpMan.php/man/systemd.positive/5/markdown) — DNSSEC trust anchor configuration files
       [**systemd.preset**(5)](https://www.chedong.com/phpMan.php/man/systemd.preset/5/markdown) — Service enablement presets
       [**systemd.resource-control**(5)](https://www.chedong.com/phpMan.php/man/systemd.resource-control/5/markdown) — Resource control unit settings
       [**systemd.scope**(5)](https://www.chedong.com/phpMan.php/man/systemd.scope/5/markdown) — Scope unit configuration
       [**systemd.service**(5)](https://www.chedong.com/phpMan.php/man/systemd.service/5/markdown) — Service unit configuration
       [**systemd.slice**(5)](https://www.chedong.com/phpMan.php/man/systemd.slice/5/markdown) — Slice unit configuration
       [**systemd.socket**(5)](https://www.chedong.com/phpMan.php/man/systemd.socket/5/markdown) — Socket unit configuration
       [**systemd.special**(7)](https://www.chedong.com/phpMan.php/man/systemd.special/7/markdown) — Special systemd units
       [**systemd.swap**(5)](https://www.chedong.com/phpMan.php/man/systemd.swap/5/markdown) — Swap unit configuration
       [**systemd.syntax**(7)](https://www.chedong.com/phpMan.php/man/systemd.syntax/7/markdown) — General syntax of systemd configuration files
       [**systemd.target**(5)](https://www.chedong.com/phpMan.php/man/systemd.target/5/markdown) — Target unit configuration
       [**systemd.time**(7)](https://www.chedong.com/phpMan.php/man/systemd.time/7/markdown) — Time and date specifications
       [**systemd.timer**(5)](https://www.chedong.com/phpMan.php/man/systemd.timer/5/markdown) — Timer unit configuration
       [**systemd.unit**(5)](https://www.chedong.com/phpMan.php/man/systemd.unit/5/markdown) — Unit configuration
       [**sysusers.d**(5)](https://www.chedong.com/phpMan.php/man/sysusers.d/5/markdown) — Declarative allocation of system users and groups


**T**
       [**telinit**(8)](https://www.chedong.com/phpMan.php/man/telinit/8/markdown) — Change SysV runlevel
       [**timedatectl**(1)](https://www.chedong.com/phpMan.php/man/timedatectl/1/markdown) — Control the system time and date
       [**timesyncd.conf**(5)](https://www.chedong.com/phpMan.php/man/timesyncd.conf/5/markdown) — Network Time Synchronization configuration files
       [**timesyncd.conf.d**(5)](https://www.chedong.com/phpMan.php/man/timesyncd.conf.d/5/markdown) — Network Time Synchronization configuration files
       [**tmpfiles.d**(5)](https://www.chedong.com/phpMan.php/man/tmpfiles.d/5/markdown) — Configuration for creation, deletion and cleaning of volatile and temporary
       files


**U**
       [**udev**(7)](https://www.chedong.com/phpMan.php/man/udev/7/markdown) — Dynamic device management
       [**udev.conf**(5)](https://www.chedong.com/phpMan.php/man/udev.conf/5/markdown) — Configuration for device event managing daemon
       **udev**___**device**___**get**___**[action**(3)](https://www.chedong.com/phpMan.php/man/action/3/markdown) — Query device properties
       **udev**___**device**___**get**___**current**___**tags**___**list**___**[entry**(3)](https://www.chedong.com/phpMan.php/man/entry/3/markdown) — Retrieve or set device attributes
       **udev**___**device**___**get**___**devlinks**___**list**___**[entry**(3)](https://www.chedong.com/phpMan.php/man/entry/3/markdown) — Retrieve or set device attributes
       **udev**___**device**___**get**___**[devnode**(3)](https://www.chedong.com/phpMan.php/man/devnode/3/markdown) — Query device properties
       **udev**___**device**___**get**___**[devnum**(3)](https://www.chedong.com/phpMan.php/man/devnum/3/markdown) — Query device properties
       **udev**___**device**___**get**___**[devpath**(3)](https://www.chedong.com/phpMan.php/man/devpath/3/markdown) — Query device properties
       **udev**___**device**___**get**___**[devtype**(3)](https://www.chedong.com/phpMan.php/man/devtype/3/markdown) — Query device properties
       **udev**___**device**___**get**___**[driver**(3)](https://www.chedong.com/phpMan.php/man/driver/3/markdown) — Query device properties
       **udev**___**device**___**get**___**is**___**[initialized**(3)](https://www.chedong.com/phpMan.php/man/initialized/3/markdown) — Query device properties
       **udev**___**device**___**get**___**[parent**(3)](https://www.chedong.com/phpMan.php/man/parent/3/markdown) — Query device properties
       **udev**___**device**___**get**___**parent**___**with**___**subsystem**___**[devtype**(3)](https://www.chedong.com/phpMan.php/man/devtype/3/markdown) — Query device properties
       **udev**___**device**___**get**___**properties**___**list**___**[entry**(3)](https://www.chedong.com/phpMan.php/man/entry/3/markdown) — Retrieve or set device attributes
       **udev**___**device**___**get**___**property**___**[value**(3)](https://www.chedong.com/phpMan.php/man/value/3/markdown) — Retrieve or set device attributes
       **udev**___**device**___**get**___**[subsystem**(3)](https://www.chedong.com/phpMan.php/man/subsystem/3/markdown) — Query device properties
       **udev**___**device**___**get**___**sysattr**___**list**___**[entry**(3)](https://www.chedong.com/phpMan.php/man/entry/3/markdown) — Retrieve or set device attributes
       **udev**___**device**___**get**___**sysattr**___**[value**(3)](https://www.chedong.com/phpMan.php/man/value/3/markdown) — Retrieve or set device attributes
       **udev**___**device**___**get**___**[sysname**(3)](https://www.chedong.com/phpMan.php/man/sysname/3/markdown) — Query device properties
       **udev**___**device**___**get**___**[sysnum**(3)](https://www.chedong.com/phpMan.php/man/sysnum/3/markdown) — Query device properties
       **udev**___**device**___**get**___**[syspath**(3)](https://www.chedong.com/phpMan.php/man/syspath/3/markdown) — Query device properties
       **udev**___**device**___**get**___**tags**___**list**___**[entry**(3)](https://www.chedong.com/phpMan.php/man/entry/3/markdown) — Retrieve or set device attributes
       **udev**___**device**___**get**___**[udev**(3)](https://www.chedong.com/phpMan.php/man/udev/3/markdown) — Query device properties
       **udev**___**device**___**has**___**current**___**[tag**(3)](https://www.chedong.com/phpMan.php/man/tag/3/markdown) — Retrieve or set device attributes
       **udev**___**device**___**has**___**[tag**(3)](https://www.chedong.com/phpMan.php/man/tag/3/markdown) — Retrieve or set device attributes
       **udev**___**device**___**new**___**from**___**device**___**[id**(3)](https://www.chedong.com/phpMan.php/man/id/3/markdown) — Create, acquire and release a udev device object
       **udev**___**device**___**new**___**from**___**[devnum**(3)](https://www.chedong.com/phpMan.php/man/devnum/3/markdown) — Create, acquire and release a udev device object
       **udev**___**device**___**new**___**from**___**[environment**(3)](https://www.chedong.com/phpMan.php/man/environment/3/markdown) — Create, acquire and release a udev device object
       **udev**___**device**___**new**___**from**___**subsystem**___**[sysname**(3)](https://www.chedong.com/phpMan.php/man/sysname/3/markdown) — Create, acquire and release a udev device object
       **udev**___**device**___**new**___**from**___**[syspath**(3)](https://www.chedong.com/phpMan.php/man/syspath/3/markdown) — Create, acquire and release a udev device object
       **udev**___**device**___**[ref**(3)](https://www.chedong.com/phpMan.php/man/ref/3/markdown) — Create, acquire and release a udev device object
       **udev**___**device**___**set**___**sysattr**___**[value**(3)](https://www.chedong.com/phpMan.php/man/value/3/markdown) — Retrieve or set device attributes
       **udev**___**device**___**[unref**(3)](https://www.chedong.com/phpMan.php/man/unref/3/markdown) — Create, acquire and release a udev device object
       **udev**___**enumerate**___**add**___**match**___**is**___**[initialized**(3)](https://www.chedong.com/phpMan.php/man/initialized/3/markdown) — Modify filters
       **udev**___**enumerate**___**add**___**match**___**[parent**(3)](https://www.chedong.com/phpMan.php/man/parent/3/markdown) — Modify filters
       **udev**___**enumerate**___**add**___**match**___**[property**(3)](https://www.chedong.com/phpMan.php/man/property/3/markdown) — Modify filters
       **udev**___**enumerate**___**add**___**match**___**[subsystem**(3)](https://www.chedong.com/phpMan.php/man/subsystem/3/markdown) — Modify filters
       **udev**___**enumerate**___**add**___**match**___**[sysattr**(3)](https://www.chedong.com/phpMan.php/man/sysattr/3/markdown) — Modify filters
       **udev**___**enumerate**___**add**___**match**___**[sysname**(3)](https://www.chedong.com/phpMan.php/man/sysname/3/markdown) — Modify filters
       **udev**___**enumerate**___**add**___**match**___**[tag**(3)](https://www.chedong.com/phpMan.php/man/tag/3/markdown) — Modify filters
       **udev**___**enumerate**___**add**___**nomatch**___**[subsystem**(3)](https://www.chedong.com/phpMan.php/man/subsystem/3/markdown) — Modify filters
       **udev**___**enumerate**___**add**___**nomatch**___**[sysattr**(3)](https://www.chedong.com/phpMan.php/man/sysattr/3/markdown) — Modify filters
       **udev**___**enumerate**___**add**___**[syspath**(3)](https://www.chedong.com/phpMan.php/man/syspath/3/markdown) — Query or modify a udev enumerate object
       **udev**___**enumerate**___**get**___**list**___**[entry**(3)](https://www.chedong.com/phpMan.php/man/entry/3/markdown) — Query or modify a udev enumerate object
       **udev**___**enumerate**___**get**___**[udev**(3)](https://www.chedong.com/phpMan.php/man/udev/3/markdown) — Query or modify a udev enumerate object
       **udev**___**enumerate**___**[new**(3)](https://www.chedong.com/phpMan.php/man/new/3/markdown) — Create, acquire and release a udev enumerate object
       **udev**___**enumerate**___**[ref**(3)](https://www.chedong.com/phpMan.php/man/ref/3/markdown) — Create, acquire and release a udev enumerate object
       **udev**___**enumerate**___**scan**___**[devices**(3)](https://www.chedong.com/phpMan.php/man/devices/3/markdown) — Query or modify a udev enumerate object
       **udev**___**enumerate**___**scan**___**[subsystems**(3)](https://www.chedong.com/phpMan.php/man/subsystems/3/markdown) — Query or modify a udev enumerate object
       **udev**___**enumerate**___**[unref**(3)](https://www.chedong.com/phpMan.php/man/unref/3/markdown) — Create, acquire and release a udev enumerate object
       **udev**___**list**___**[entry**(3)](https://www.chedong.com/phpMan.php/man/entry/3/markdown) — Iterate and access udev lists
       **udev**___**list**___**entry**___**get**___**by**___**[name**(3)](https://www.chedong.com/phpMan.php/man/name/3/markdown) — Iterate and access udev lists
       **udev**___**list**___**entry**___**get**___**[name**(3)](https://www.chedong.com/phpMan.php/man/name/3/markdown) — Iterate and access udev lists
       **udev**___**list**___**entry**___**get**___**[next**(3)](https://www.chedong.com/phpMan.php/man/next/3/markdown) — Iterate and access udev lists
       **udev**___**list**___**entry**___**get**___**[value**(3)](https://www.chedong.com/phpMan.php/man/value/3/markdown) — Iterate and access udev lists
       **udev**___**monitor**___**enable**___**[receiving**(3)](https://www.chedong.com/phpMan.php/man/receiving/3/markdown) — Query and modify device monitor
       **udev**___**monitor**___**filter**___**add**___**match**___**subsystem**___**[devtype**(3)](https://www.chedong.com/phpMan.php/man/devtype/3/markdown) — Modify filters
       **udev**___**monitor**___**filter**___**add**___**match**___**[tag**(3)](https://www.chedong.com/phpMan.php/man/tag/3/markdown) — Modify filters
       **udev**___**monitor**___**filter**___**[remove**(3)](https://www.chedong.com/phpMan.php/man/remove/3/markdown) — Modify filters
       **udev**___**monitor**___**filter**___**[update**(3)](https://www.chedong.com/phpMan.php/man/update/3/markdown) — Modify filters
       **udev**___**monitor**___**get**___**[fd**(3)](https://www.chedong.com/phpMan.php/man/fd/3/markdown) — Query and modify device monitor
       **udev**___**monitor**___**get**___**[udev**(3)](https://www.chedong.com/phpMan.php/man/udev/3/markdown) — Query and modify device monitor
       **udev**___**monitor**___**new**___**from**___**[netlink**(3)](https://www.chedong.com/phpMan.php/man/netlink/3/markdown) — Create, acquire and release a udev monitor object
       **udev**___**monitor**___**receive**___**[device**(3)](https://www.chedong.com/phpMan.php/man/device/3/markdown) — Query and modify device monitor
       **udev**___**monitor**___**[ref**(3)](https://www.chedong.com/phpMan.php/man/ref/3/markdown) — Create, acquire and release a udev monitor object
       **udev**___**monitor**___**set**___**receive**___**buffer**___**[size**(3)](https://www.chedong.com/phpMan.php/man/size/3/markdown) — Query and modify device monitor
       **udev**___**monitor**___**[unref**(3)](https://www.chedong.com/phpMan.php/man/unref/3/markdown) — Create, acquire and release a udev monitor object
       **udev**___**[new**(3)](https://www.chedong.com/phpMan.php/man/new/3/markdown) — Create, acquire and release a udev context object
       **udev**___**[ref**(3)](https://www.chedong.com/phpMan.php/man/ref/3/markdown) — Create, acquire and release a udev context object
       **udev**___**[unref**(3)](https://www.chedong.com/phpMan.php/man/unref/3/markdown) — Create, acquire and release a udev context object
       [**udevadm**(8)](https://www.chedong.com/phpMan.php/man/udevadm/8/markdown) — udev management tool
       **user-runtime-dir@[.service**(5)](https://www.chedong.com/phpMan.php/man/.service/5/markdown) — System units to start the user manager
       [**user.conf.d**(5)](https://www.chedong.com/phpMan.php/man/user.conf.d/5/markdown) — System and session service manager configuration files
       **user@[.service**(5)](https://www.chedong.com/phpMan.php/man/.service/5/markdown) — System units to start the user manager


**V**
       [**veritytab**(5)](https://www.chedong.com/phpMan.php/man/veritytab/5/markdown) — Configuration for verity block devices


## SEE ALSO
       [**systemd.directives**(7)](https://www.chedong.com/phpMan.php/man/systemd.directives/7/markdown)

       This index contains 1024 entries, referring to 354 individual manual pages.



systemd 249                                                                         [SYSTEMD.INDEX(7)](https://www.chedong.com/phpMan.php/man/SYSTEMD.INDEX/7/markdown)