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Watch is a Linux command that allows you to execute a command or program periodically and also shows you output on the screen. This means that you will be able to see the program output in time. By default watch re-runs the command/program every 2 seconds.
How do you run a script periodically in Linux?
If you want to run a command periodically, there’s 3 ways :
- using the crontab command ex. * * * * * command (run every minutes)
- using a loop like : while true; do ./my_script.sh; sleep 60; done (not precise)
- using systemd timer.
How do you repeat a command in Linux?
Press CTRL+P to switch to the last command, and then press CTRL+O to execute it. This will do the wonder. No configuration needed! You can use CTRL+O as many times as you want to keep re-executing the last commands.
