tldr/pages/common/watch.md

watch

Execute a program periodically and monitor the output in full-screen mode. More information: https://manned.org/watch.

• Repeatedly run a command and show the result:

watch {{command}}

• Re-run a command every 60 seconds:

watch {{[-n|--interval]}} {{60}} {{command}}

• Monitor disk space, highlighting differences as they appear:

watch {{[-d|--differences]}} {{df}}

• Repeatedly run a pipeline and show the result:

watch "{{command_1}} | {{command_2}} | {{command_3}}"

• Exit watch if the visible output changes:

watch {{[-g|--chgexit]}} {{lsblk}}

• Interpret terminal control characters:

watch {{[-c|--color]}} {{ls --color=always}}