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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-certifi‐
       cates/update.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 c_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).

SEE ALSO
       c_rehash(1)

AUTHOR
       This manual page was written by Fumitoshi UKAI , for the Debian project
       (but may be used by others).

                                          20 April 2003                 UPDATE-CA-CERTIFICATES(8)

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