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 manages the collection of TLS
certificates for the local machine and generates ca-certificates.crt.
ca-certificates.crt is a single-file of concatenated certificates. The
collection of individual certificates is stored at /etc/ssl/certs.
The program reads the configuration file /etc/ca-certificates.conf.
Each line gives a pathname of a CA certificate under /usr/share/ca-cer-
tificates 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 be in PEM format and 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-certificates are
also included and implicitly trusted.
To add one or more certificates to the machine, copy the certificates
in PEM format with the *.crt extension to /usr/local/share/ca-certifi-
cates. There should be one certificate per file, and not multiple cer-
tificates in a single file. Then run update-ca-certificates to merge
the new certificates into the existing machine store at /etc/ssl/certs.
Before terminating, update-ca-certificates invokes run-parts on
/etc/ca-certificates/update.d and calls each hook with a list of cer-
tificates: those added are prefixed with a +, those removed are pre-
fixed 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.
--certsconf
Change the configuration file. By default, the file /etc/ca-cer-
tificates.conf is used.
--certsdir
Change the certificate directory. By default, the directory
/usr/share/ca-certificates is used.
--localcertsdir
Change the local certificate directory. By default, the direc-
tory /usr/local/share/ca-certificates is used.
--etccertsdir
Change the /etc certificate directory. By default, the directory
/etc/ssl/certs is used.
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 cer-
tificates that were activated in /etc/ca-certificates.conf.
/usr/share/ca-certificates
Directory of CA certificates provided by the distribution.
/usr/local/share/ca-certificates
Directory of local CA certificates, with .crt extension, pro-
vided by the user.
SEE ALSO
openssl(1)
AUTHOR
This manual page was written by Fumitoshi UKAI <ukai@debian.or.jp>, for
the Debian project (but may be used by others).
20 April 2003 UPDATE-CA-CERTIFICATES(8)
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