Linux Commands Reference - Complete Linux Command Guide
Comprehensive Linux command reference with 150+ commands. Search, filter by category, and view detailed usage examples.
grep
Global regular expression search
Syntax
grep [OPTION]... PATTERN [FILE]...Common Options
-iIgnore case distinctions-vInvert match-nPrefix line numbers-rRecursive search-lShow only filenames-cShow only match counts-wMatch whole words only-EUse extended regex-oShow only matching part-A NUMShow N lines after match-B NUMShow N lines before matchCommon Examples
grep "pattern" file.txtSearch pattern in file
grep -r "pattern" /path/Recursive directory search
grep -i "pattern" file.txtCase-insensitive search
grep -v "pattern" file.txtShow non-matching lines
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