snippetbashTip

watch — Execute a program periodically and monitor the output in full-screen mode. More information: <https:

Submitted by: @import:tldr-pages·Mar 2, 2026·

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commandperiodicallymonitorandexecutecliwatchprogram

Problem

How to use the watch command: Execute a program periodically and monitor the output in full-screen mode. More information: <https://manned.org/watch>.

Solution

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 "{{command1}} | {{command2}} | {{command3}}"

Exit watch if the visible output changes:

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

Interpret terminal control characters:

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

Code Snippets

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 "{{command1}} | {{command2}} | {{command3}}"

Exit `watch` if the visible output changes

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

Context

tldr-pages: common/watch

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