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
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.
Specify an alternate directory where pam_timestamp creates
How long should pam_timestamp treat timestamp as valid after
their last modification date (in seconds). Default is 300
Attempt to inform the user when access is granted.
Turns on debugging messages sent to syslog(3).
The module was not able to retrieve the user name or no valid
timestamp file was found.
Everything was successful.
Timestamp file could not be created or updated.
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.bz2 fetched from
⟨http://www.linux-pam.org/library/⟩ on 2020-07-14. 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
Linux-PAM Manual 04/01/2016 PAM_TIMESTAMP(8)