Is there a way to find when a user is added in Linux host? Post: 302886742

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Top Forums Shell Programming and Scripting Is there a way to find when a user is added in Linux host? Post 302886742 by rbatte1 on Monday 3rd of February 2014 11:26:46 AM

02-03-2014

Moderator

The timestamp of the home-directory will only show the last modification of the directory, which is altered when an object within it (file, sub-directory, pipe etc.) is create/deleted/renamed etc. so just using ls -l ~someuser/ is unreliable.

Going forward, you could intercept the executable /usr/bin/useradd with your own script that writes to either a log file or the syslog. Looking for something that has already happened, you might get lucky if the operative used sudo and that will have been written to the syslog. Of course, it depends how long you keep your syslog.

We have intercepted the call to write logs and we also have a monthly reconciliation of new accounts against requests, so that narrows it down.

Unfortunately, being paranoid after an event does not mean that you can necessarily find the original action.

I hope that this helps,
Robin
Liverpool/Blackburn
UK

Last edited by rbatte1; 02-03-2014 at 12:31 PM.. Reason: Additional comment about "ls -l ~someuser" being unreliable

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syslog

SYSLOG(8)                                                         System Logging                                                         SYSLOG(8)

NAME

       syslog-ng, syslogd

DESCRIPTION

       There are different syslog daemon implementations supported as the system's syslog service, currently syslogd, syslog-ng and rsyslogd

       The  first  installed daemon activates itself for the syslog service. Starting with openSUSE-11.2, it is rsyslogd, before it was syslog-ng.
       But this depends on the software selection during the installation.

       The name of the daemon used as syslog service is specified in the
       SYSLOG_DAEMON variable in /etc/sysconfig/syslog.

       The yast2 sysconfig module provides a comfortable way to switch to another installed daemon and restart the service.

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AUTHOR

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SEE ALSO

       sysklogd(8) syslogd(8) syslog.conf(5) syslog-ng(8) syslog-ng.conf(5) rsyslogd(8) rsyslog.conf(5)

syslog                                                               May 2008                                                            SYSLOG(8)