show_users

Modified http://www.nagiosexchange.org/cgi-bin/page.cgi?g=1415.html;d=1
Orriginal Author : Hari Sekhon

Just run this plugin on any Unix/Linux machine with the standard Bash shell installed and it will list all logged in users.

You can set the plugin to alert if certain users are logged in, or even better, if any user not from a defined whitelist is logged in.

You can now also use -w and -c to alert on the number of users logged in. This warning will show a `who` style output, and will show where the users are logged in from.

You can also alert if a specific user or users are not logged on.

Run ./show_users --help for details on switches.

Support
For any bugs, feature requests or other support issues, contact me at rmackenz@sfu.ca or the original author at hpsekhon@googlemail.com.