`grep`

6 commands

Exclude lines matching a pattern
```
grep -v "pattern" file
```
Prints only the lines of the file that do not match the pattern.
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Print only the matched text
```
grep -o "pattern" file
```
Outputs just the part of each line that matches, one match per line, instead of the whole line.
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Search for a literal string
```
grep -F "text" file
```
Prints lines containing the exact text, treating regex characters such as dots and brackets literally.
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Search for a pattern in a file
```
grep -n "pattern" file
```
Prints every line of the file that matches the regular expression, prefixed with its line number.
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Search recursively in a directory
```
grep -rnI "pattern" .
```
Searches every file under the directory, skipping binary files, and prints matches with file name and line number.
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Show lines around each match
```
grep -C 3 "pattern" file
```
Prints each matching line together with the given number of lines before and after it.
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