I was wondering if there was a way to detect which users had an active ssh session, or rather how long they have been logged in.


  • Out of curiosity, why do you want to track the time used?
    – Nick ODell
    Jun 14, 2011 at 4:19

2 Answers 2


use w and last.


Each ssh session has a corresponding tty process. Just check how long it has been running.

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