$LOGCHECK
 – 
Seconds between checks for login/logout activity
$LOGCHECK defines the interval in seconds between checks for login and logout activity.
Links
Examples
- Check every second for any login/logout event
 - Output:
1 2 3LOGCHECK=1 watch=(all) # activity is only printed after interacting with the shell1user1 has logged on pts/3 from :0. 
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