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> Find patterns in files using regular expressions.
Search for a pattern within a file:
grep "{search_pattern}" {path/to/file}
Search for an exact string (disables regular expressions):
grep --fixed-strings "{exact_string}" {path/to/file}
Search for a pattern in all files recursively in a directory, showing line numbers of matches, ignoring binary files:
grep --recursive --line-number --binary-files={without-match} "{search_pattern}" {path/to/directory}
Use extended regular expressions (supports `?`, `+`, `{}`, `()` and `|`), in case-insensitive mode:
grep --extended-regexp --ignore-case "{search_pattern}" {path/to/file}
Print 3 lines of context around, before, or after each match:
grep --{context|before-context|after-context}={3} "{search_pattern}" {path/to/file}
Print file name and line number for each match:
grep --with-filename --line-number "{search_pattern}" {path/to/file}
Search for lines matching a pattern, printing only the matched text:
grep --only-matching "{search_pattern}" {path/to/file}
Search stdin for lines that do not match a pattern:
cat {path/to/file} | grep --invert-match "{search_pattern}"
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> This work is licensed under the Creative Commons Attribution 4.0 International License (CC-BY).
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