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linux: Add grep command explanation (#176)

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Omar Hamad 2021-11-11 11:41:51 +02:00 committed by GitHub
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@ -638,6 +638,9 @@ They take in input (<) and output for a given file (>) using stdin and stdout.
</summary><br><b> </summary><br><b>
- sed: a stream editor. Can be used for various purposes like replacing a word in a file: `sed -i s/salad/burger/g` - sed: a stream editor. Can be used for various purposes like replacing a word in a file: `sed -i s/salad/burger/g`
- grep: a search tool. Used to search, count or match a text in a file:
- searching for any line that contains a word in a file: `grep 'word' file.md`
- or displaying the total number of times a string appears in a file: `grep -c 'This is a string' file.md`
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