# pam_timestamp_check - Check to see if the default timestamp is valid - man(8) - [phpMan]

[_PAM_TIMESTAMP_CHECK_(8)](https://www.chedong.com/phpMan.php/man/PAMTIMESTAMPCHECK/8/markdown)                    Linux-PAM Manual                    [_PAM_TIMESTAMP_CHECK_(8)](https://www.chedong.com/phpMan.php/man/PAMTIMESTAMPCHECK/8/markdown)

## NAME
       pam_timestamp_check - Check to see if the default timestamp is valid

## SYNOPSIS


       **pam_timestamp_check **[-k] [-d] [_target_user_]

## DESCRIPTION
       With no arguments **pam_timestamp_check **will check to see if the default timestamp is valid, or
       optionally remove it.

## OPTIONS
### -k
           Instead of checking the validity of a timestamp, remove it. This is analogous to sudo's
           _-k_ option.

### -d
           Instead of returning validity using an exit status, loop indefinitely, polling regularly
           and printing the status on standard output.

       target_user
           By default **pam_timestamp_check **checks or removes timestamps generated by _pam_timestamp_
           when the user authenticates as herself. When the user authenticates as a different user,
           the name of the timestamp file changes to accommodate this.  _target_user_ allows one to
           specify this user name.

## RETURN VALUES
       0
           The timestamp is valid.

       2
           The binary is not setuid root.

       3
           Invalid invocation.

       4
           User is unknown.

       5
           Permissions error.

       6
           Invalid controlling tty.

       7
           Timestamp is not valid.

## NOTES
       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
           auth sufficient pam_timestamp.so verbose
           auth required   pam_unix.so

           session required pam_unix.so
           session optional pam_timestamp.so


## FILES
       /var/run/sudo/...
           timestamp files and directories

## SEE ALSO
       [**pam_timestamp_check**(8)](https://www.chedong.com/phpMan.php/man/pamtimestampcheck/8/markdown), [**pam.conf**(5)](https://www.chedong.com/phpMan.php/man/pam.conf/5/markdown), [**pam.d**(5)](https://www.chedong.com/phpMan.php/man/pam.d/5/markdown), [**pam**(7)](https://www.chedong.com/phpMan.php/man/pam/7/markdown)

## AUTHOR
       pam_timestamp was written by Nalin Dahyabhai.

Linux-PAM                                    05/07/2023                       [_PAM_TIMESTAMP_CHECK_(8)](https://www.chedong.com/phpMan.php/man/PAMTIMESTAMPCHECK/8/markdown)