At and batch read commands from standard input or from a specified file. At allows you to specify that a command will be run at a particular time. Batch will execute commands when the system load levels drop to a particular level. Both commands use /bin/sh.

You should install the at package if you need a utility for time-oriented job control. Note: If it is a recurring job that will need to be repeated at the same time every day/week, etc. you should use crontab instead.