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 certificates.

       It reads the file /etc/ca-certificates.conf. Each line  gives  a  pathname  of  a  CA  certificate  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-certificates are also
       included as implicitly trusted.

       Before terminating, update-ca-certificates invokes run-parts on /etc/ca-certificates/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 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).

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)