tldr/pages/linux/watch.md

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# watch
> Execute a command repeatedly, and monitor the output in full-screen mode.
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- Monitor files in the current directory:
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`watch {{ls}}`
- Monitor disk space and highlight the changes:
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`watch -d {{df}}`
- Monitor "node" processes, refreshing every 3 seconds:
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`watch -n {{3}} "{{ps aux | grep node}}"`