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Merge pull request #707 from oxguy3/watch

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Add watch
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Felix Yan 2016-01-22 10:11:09 +08:00
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# watch
> Execute a program periodically, showing output fullscreen.
- Repeatedly run a command and show the result:
`watch {{command}}`
- Re-run a command every 60 seconds:
`watch -n {{60}} {{command}}`
- Monitor the contents of a directory, highlighting differences as they appear:
`watch -d {{ls -l}}`