Scheduling tasks is a great strength of Linux. Many administrative tasks such as scheduling backups, rotating log files, synchronizing time, etc. are done on a recurring basis with little to no user intervention using cron or anacron.
While cron and anacron facilities are great for recurring tasks, how can a user schedule simple tasks that only need to be run “one time” during the middle of the night or on a future date? The AT command is the answer. AT is one of those commands that a lot of people don’t know about but it can be very useful.
AT’s commandline syntax makes scheduling those “one time” tasks quick and easy. Let’s get started with some examples.
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