           pam_umask — PAM module to set the file mode creation mask

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DESCRIPTION

   pam_umask is a PAM module to set the file mode creation mask of the
   current environment. The umask affects the default permissions assigned to
   newly created files.

   The PAM module tries to get the umask value from the following places in
   the following order:

     • umask= entry in the user's GECOS field (see below for details)

     • umask= argument

     • UMASK entry from /etc/login.defs

     • UMASK= entry from /etc/default/login

   The GECOS field is split on comma ',' characters. Entries must be set in
   its 'other' (sub-)field (the 5th field within the GECOS field), which
   could be done, for example, using chfn --other. In addition to the umask=
   entry, the module also recognizes the pri= entry, which sets the nice
   priority value for the session, and the ulimit= entry, which sets the
   maximum size of files the processes in the session can create.

OPTIONS

   debug

   Print debug information.

   silent

   Don't print informative messages.

   usergroups

   If the user is not root and the username is the same as primary group
   name, the umask group bits are set to be the same as owner bits (examples:
   022 -> 002, 077 -> 007).

   nousergroups

   This is the direct opposite of the usergroups option described above,
   which can be useful in case pam_umask has been compiled with usergroups
   enabled by default and you want to disable it at runtime.

   umask=mask

   Sets the calling process's file mode creation mask (umask) to mask & 0777.
   The value is interpreted as Octal.

EXAMPLES

   Add the following line to /etc/pam.d/login to set the user specific umask
   at login:

         session optional pam_umask.so umask=0022


AUTHOR

   pam_umask was written by Thorsten Kukuk <kukuk@thkukuk.de>.
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