Grep Quick Reference

Basic grep usage

Get lines which does not begin with "#" or ";"?

grep "^[^#;]" /path/to/my/file 

Search recursively through single file extension

grep -r --include=<pattern> <string> <directory>

Print two line after and before the match.

grep -A 2 -B 2 "pattern" /path/to/my/file"

Print the file name for each match

grep -H word /path/to/file