tldr/pages/common/fgrep.md

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# fgrep
> Matches patterns in files.
> Supports simple patterns and regular expressions.
- Search for an exact string in a file:
`fgrep {{search_string}} {{path/to/file}}`
- Search only lines that match entirely in files:
`fgrep -x {{path/to/file1}} {{path/to/file2}}`
- Count the number of lines that match the given string in a file:
`fgrep -c {{search_string}} {{path/to/file}}`
- Show the line number in the file along with the line matched:
`fgrep -n {{search_string}} {{path/to/file}}`
- Display all lines except those that contain the given regular expression:
`fgrep -v {{^regex$}} {{path/to/file}}`
- Display filenames whose content matches the regular expression at least once:
`fgrep -l {{^regex$}} {{path/to/file1}} {{path/to/file2}}`