NAME | SYNOPSIS | DESCRIPTION | OPTIONS | MODULE TYPES PROVIDED | RETURN VALUES | NOTES | EXAMPLES | FILES | SEE ALSO | AUTHOR | COLOPHON 

PAM_TIMESTAMP(8)              Linux-PAM Manual              PAM_TIMESTAMP(8)

NAME         top

       pam_timestamp - Authenticate using cached successful authentication
       attempts

SYNOPSIS         top

       pam_timestamp.so [timestampdir=directory] [timestamp_timeout=number]
                        [verbose] [debug]

DESCRIPTION         top

       In a nutshell, pam_timestamp caches successful authentication
       attempts, and allows you to use a recent successful attempt as the
       basis for authentication. This is similar mechanism which is used in
       sudo.
       When an application opens a session using pam_timestamp, a timestamp
       file is created in the timestampdir directory for the user. When an
       application attempts to authenticate the user, a pam_timestamp will
       treat a sufficiently recent timestamp file as grounds for succeeding.

OPTIONS         top

       timestampdir=directory
           Specify an alternate directory where pam_timestamp creates
           timestamp files.
       timestamp_timeout=number
           How long should pam_timestamp treat timestamp as valid after
           their last modification date (in seconds). Default is 300
           seconds.
       verbose
           Attempt to inform the user when access is granted.
       debug
           Turns on debugging messages sent to syslog(3).

MODULE TYPES PROVIDED         top

       The auth and session module types are provided.

RETURN VALUES         top

       PAM_AUTH_ERR
           The module was not able to retrieve the user name or no valid
           timestamp file was found.
       PAM_SUCCESS
           Everything was successful.
       PAM_SESSION_ERR
           Timestamp file could not be created or updated.

NOTES         top

       Users can get confused when they are not always asked for passwords
       when running a given program. Some users reflexively begin typing
       information before noticing that it is not being asked for.

EXAMPLES         top

           auth sufficient pam_timestamp.so verbose
           auth required   pam_unix.so
           session required pam_unix.so
           session optional pam_timestamp.so

FILES         top

       /var/run/pam_timestamp/...
           timestamp files and directories

SEE ALSO         top

       pam_timestamp_check(8), pam.conf(5), pam.d(5), pam(8)

AUTHOR         top

       pam_timestamp was written by Nalin Dahyabhai.

COLOPHON         top

       This page is part of the linux-pam (Pluggable Authentication Modules
       for Linux) project.  Information about the project can be found at 
       ⟨http://www.linux-pam.org/⟩.  If you have a bug report for this manual
       page, see ⟨//www.linux-pam.org/⟩.  This page was obtained from the
       tarball Linux-PAM-1.3.0.tar.gz fetched from 
       ⟨http://www.linux-pam.org/library/⟩ on 2017-07-05.  If you discover
       any rendering problems in this HTML version of the page, or you
       believe there is a better or more up-to-date source for the page, or
       you have corrections or improvements to the information in this
       COLOPHON (which is not part of the original manual page), send a mail
       to man-pages@man7.org
Linux-PAM Manual                 04/01/2016                 PAM_TIMESTAMP(8)