# bzgrep > Find patterns in `bzip2` compressed files using `grep`. > More information: . - Search for a pattern within a compressed file: `bzgrep "{{search_pattern}}" {{path/to/file}}` - Use extended regular expressions (supports `?`, `+`, `{}`, `()` and `|`), in case-insensitive mode: `bzgrep {{[-E|--extended-regexp]}} {{[-i|--ignore-case]}} "{{search_pattern}}" {{path/to/file}}` - Print 3 lines of [C]ontext around, [B]efore, or [A]fter each match: `bzgrep --{{context|before-context|after-context}} {{3}} "{{search_pattern}}" {{path/to/file}}` - Print file name and line number for each match: `bzgrep {{[-H|--with-filename]}} {{[-n|--line-number]}} "{{search_pattern}}" {{path/to/file}}` - Search for lines matching a pattern, printing only the matched text: `bzgrep {{[-o|--only-matching]}} "{{search_pattern}}" {{path/to/file}}` - Recursively search files in a bzip2 compressed tar archive for a pattern: `bzgrep {{[-r|--recursive]}} "{{search_pattern}}" {{path/to/tar/file}}` - Search `stdin` for lines that do not match a pattern: `cat {{/path/to/bz/compressed/file}} | bzgrep {{[-v|--invert-match]}} "{{search_pattern}}"`