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SHUTDOWN(8) shutdown SHUTDOWN(8)

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🏷️ NAME

shutdown - Halt, power-off or reboot the machine

🚀 Quick Reference

Use Case	Command	Description
🛑 Immediate shutdown	shutdown now	Shut down the system immediately
🔄 Reboot	shutdown -r now	Reboot the system immediately
⏰ Scheduled shutdown	shutdown +5	Shut down in 5 minutes (default timeout)
❌ Cancel shutdown	shutdown -c	Cancel a pending shutdown
✉️ Send wall message	shutdown now "System going down"	Shutdown with a message to users
🔌 Power off (default)	shutdown -P now	Power off the machine
⏸️ Halt	shutdown -H now	Halt the machine
📋 Dry run (no action)	shutdown -k now	Only send wall message, no shutdown

📋 SYNOPSIS

shutdown [OPTIONS...] [TIME] [WALL...]

📝 DESCRIPTION

shutdown may be used to halt, power-off or reboot the machine.

The first argument may be a time string (which is usually "now"). Optionally, this may be followed by a wall message to be sent to all logged-in users before going down.

The time string may either be in the format "hh:mm" for hour/minutes specifying the time to execute the shutdown at, specified in 24h clock format. Alternatively it may be in the syntax "+m" referring to the specified number of minutes m from now. "now" is an alias for "+0", i.e. for triggering an immediate shutdown. If no time argument is specified, "+1" is implied.

Note that to specify a wall message you must specify a time argument, too.

If the time argument is used, 5 minutes before the system goes down the /run/nologin file is created to ensure that further logins shall not be allowed.

🔧 OPTIONS

• --help — 📖 Print a short help text and exit.
• -H, --halt — ⏸️ Halt the machine.
• -P, --poweroff — 🔌 Power-off the machine (the default).
• -r, --reboot — 🔄 Reboot the machine.
• -h — 🔀 Equivalent to --poweroff, unless --halt is specified.
• -k — ✉️ Do not halt, power-off, reboot, just write wall message.
• --no-wall — 🔇 Do not send wall message before halt, power-off, reboot.
• -c — ❌ Cancel a pending shutdown. This may be used to cancel the effect of an invocation of shutdown with a time argument that is not "+0" or "now".

🚪 Exit Codes

On success, 0 is returned, a non-zero failure code otherwise.

🔗 SEE ALSO

systemd(1), systemctl(1), halt(8), wall(1)

systemd 249 SHUTDOWN(8)

🏷️ NAME 🚀 Quick Reference 📋 SYNOPSIS 📝 DESCRIPTION 🔧 OPTIONS 🚪 Exit Codes 🔗 SEE ALSO