tldr/pages/common/fgrep.md

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fgrep

Matches patterns in files. Supports simple patterns and regular expressions. More information: https://manned.org/fgrep.

  • 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 {{regular_expression}} {{path/to/file}}

  • Display filenames whose content matches the regular expression at least once:

fgrep -l {{regular_expression}} {{path/to/file1}} {{path/to/file2}}