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Linux Tricks - Scheduling With the Mighty At job

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HowTos

If you’ve got a task in linux that you want accomplished some time in the future, perhaps when you’re not sitting at your computer, the at command may be perfect for you. At is a great way to schedule single events in the future. It can be use to trigger a command or a series of commands can be put into a script.

I’ve used it to run a script at 2 in the morning to check for something, and I’ve also used it to put into a place a change I wanted to make in the future but would have forgotten about.

For this example, we’re going to look at a script called looky.sh, located in /usr/bin which does some directory size checking on my USB drive. I only want to execute this tomorrow morning at 3am. In a terminal run the following:

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