Which Linux scheduling utility is specifically designed to execute a command once at a specified time in the future, rather than to run jobs on a recurring schedule?
systemd timer (systemctl start-timer)
at
anacron
cron
The at utility queues a command to run a single time at the specified future time or date. Once the job executes, it is removed from the queue. Tools such as cron, anacron, or systemd timer units are intended for recurring or repetitive execution, not single-run tasks. Therefore, at is the correct choice for one-time scheduling.
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