grep

Search for text patterns in files or input.

Last updated: 2026-07-05 Report error

Syntax

$grep [OPTIONS] PATTERN [FILE...]

Examples

$grep 'pattern' file.txt

Examples

$grep -r 'text' /path/

Examples

$grep -i 'error' logfile

Shortcuts

grep -r 'pattern' . (recursive)

grep -v 'pattern' (invert match)

Typical use cases

Search text

grep 'text' file.txt

Case-insensitive

grep -i 'text' file.txt

Line numbers

grep -n 'text' file.txt

Note Essential for log analysis and filtering command output.

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