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Linux & Shell · Command

grep

grep prints input lines that match one or more patterns. It can search files, standard input, or directory trees.

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Syntax

grep [OPTION]... PATTERNS [FILE]...
grep [OPTION]... -e PATTERNS ... [FILE]...
grep [OPTION]... -f PATTERN_FILE ... [FILE]...

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Source: grep(1) - Linux manual page. Checked 2026-11-03.