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Every new command is wrapped in a tweet and posted to Twitter. Following the stream is a great way of staying abreast of the latest commands. For the more discerning, there are Twitter accounts for commands that get a minimum of 3 and 10 votes - that way only the great commands get tweeted.
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This will check if a user is logged in using ssh and will log out the user automatically after the specified time in seconds without data retrieval on the server side.
Will work with bash and zsh so put it into your sourced shell file on the server side.
Be aware that users can change this themselves as it's just a envoronment variable.
Killall5 will kill your session and redirect to login screen.
-Very useful when suffering display problems.
-Can use F1-F6
-Need to login in the particular console if not already
Check out the usage of 'trap', you may not have seen this one much. This command provides a way to schedule commands at certain times by running them after sleep finishes sleeping. In the example 'sleep 2h' sleeps for 2 hours. What is cool about this command is that it uses the 'trap' builtin bash command to remove the SIGHUP trap that normally exits all processes started by the shell upon logout. The 'trap 1' command then restores the normal SIGHUP behaviour.
It also uses the 'nice -n 19' command which causes the sleep process to be run with minimal CPU.
Further, it runs all the commands within the 2nd parentheses in the background. This is sweet cuz you can fire off as many of these as you want. Very helpful for shell scripts.
This command runs your shell script in the background with no output of any kind, and it will remain running even after you logout.