Linux: TMOUT To Automatically Log Users Out

Linux bash shell allows you to define the TMOUT environment variable. Set TMOUT to automatically log users out after a period of inactivity. The value is defined in seconds. For example,

   export TMOUT=120

To disable auto-logout, just set the TMOUT to zero or unset it as follows:
$ export TMOUT=0or
$ unset TMOUT
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