update-ca-certificates(8) - phpMan

UPDATE-CA-CERTIFICATES(8) System Manager's Manual UPDATE-CA-CERTIFICATES(8)

NAME
update-ca-certificates - update /etc/ssl/certs and ca-certificates.crt

SYNOPSIS
update-ca-certificates [options]

DESCRIPTION
This manual page documents briefly the update-ca-certificates command.

update-ca-certificates is a program that updates the directory /etc/ssl/certs to hold SSL
certificates and generates ca-certificates.crt, a concatenated single-file list of cer-
tificates.

It reads the file /etc/ca-certificates.conf. Each line gives a pathname of a CA certifi-
cate under /usr/share/ca-certificates that should be trusted. Lines that begin with "#"
are comment lines and thus ignored. Lines that begin with "!" are deselected, causing the
deactivation of the CA certificate in question. Certificates must have a .crt extension in
order to be included by update-ca-certificates.

Furthermore all certificates with a .crt extension found below /usr/local/share/ca-cer-
tificates are also included as implicitly trusted.

Before terminating, update-ca-certificates invokes run-parts on /etc/ca-certificates/up-
date.d and calls each hook with a list of certificates: those added are prefixed with a +,
those removed are prefixed with a -.

OPTIONS
A summary of options is included below.

-h, --help
Show summary of options.

-v, --verbose
Be verbose. Output openssl rehash.

-f, --fresh
Fresh updates. Remove symlinks in /etc/ssl/certs directory.

FILES
/etc/ca-certificates.conf
A configuration file.

/etc/ssl/certs/ca-certificates.crt
A single-file version of CA certificates. This holds all CA certificates that you
activated in /etc/ca-certificates.conf.

/usr/share/ca-certificates
Directory of CA certificates.

/usr/local/share/ca-certificates
Directory of local CA certificates (with .crt extension).