One of the most uses I give to this command is to turn the PC off after some time, sure there are other ways.
I like the way you may execute batch jobs at a given time, all you need is:
- Write your shell script
Which actually is a list of commands in a text file
- Execute the at command
at now + 5 minutes < $HOME/listofcommands.txt
You can use times like “now”, “noon”, “midnight”, or a date in the format of DD.MM.YY
check man at in order to have more details