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Diffstat (limited to 'modules/pam_motd/README')
| -rw-r--r-- | modules/pam_motd/README | 46 |
1 files changed, 39 insertions, 7 deletions
diff --git a/modules/pam_motd/README b/modules/pam_motd/README index c16938c1..cd1e27e9 100644 --- a/modules/pam_motd/README +++ b/modules/pam_motd/README @@ -5,23 +5,55 @@ pam_motd — Display the motd file DESCRIPTION pam_motd is a PAM module that can be used to display arbitrary motd (message of -the day) files after a successful login. By default the /etc/motd file is -shown. The message size is limited to 64KB. +the day) files after a successful login. By default, pam_motd shows files in +the following locations: + +/etc/motd +/run/motd +/usr/lib/motd +/etc/motd.d/ +/run/motd.d/ +/usr/lib/motd.d/ + +Each message size is limited to 64KB. + +If /etc/motd does not exist, then /run/motd is shown. If /run/motd does not +exist, then /usr/lib/motd is shown. + +Similar overriding behavior applies to the directories. Files in /etc/motd.d/ +override files with the same name in /run/motd.d/ and /usr/lib/motd.d/. Files +in /run/motd.d/ override files with the same name in /usr/lib/motd.d/. + +Files the in the directories listed above are displayed in lexicographic order +by name. + +To silence a message, a symbolic link with target /dev/null may be placed in / +etc/motd.d with the same filename as the message to be silenced. Example: +Creating a symbolic link as follows silences /usr/lib/motd.d/my_motd. + +ln -s /dev/null /etc/motd.d/my_motd + +The MOTD_SHOWN=pam environment variable is set after showing the motd files, +even when all of them were silenced using symbolic links. OPTIONS motd=/path/filename - The /path/filename file is displayed as message of the day. + The /path/filename file is displayed as message of the day. Multiple paths + to try can be specified as a colon-separated list. By default this option + is set to /etc/motd:/run/motd:/usr/lib/motd. motd_dir=/path/dirname.d The /path/dirname.d directory is scanned and each file contained inside of - it is displayed. + it is displayed. Multiple directories to scan can be specified as a + colon-separated list. By default this option is set to /etc/motd.d:/run/ + motd.d:/usr/lib/motd.d. -When no options are given, the default is to display both /etc/motd and the -contents of /etc/motd.d. Specifying either option (or both) will disable this -default behavior. +When no options are given, the default behavior applies for both options. +Specifying either option (or both) will disable the default behavior for both +options. EXAMPLES |