# 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 --extended-regexp --ignore-case "{{search_pattern}}" {{path/to/file}}` - Print 3 lines of context around, before, or after each match: `bzgrep --{{context|before-context|after-context}}={{3}} "{{search_pattern}}" {{path/to/file}}` - Print file name and line number for each match: `bzgrep --with-filename --line-number "{{search_pattern}}" {{path/to/file}}` - Search for lines matching a pattern, printing only the matched text: `bzgrep --only-matching "{{search_pattern}}" {{path/to/file}}` - Recursively search files in a `bzip2` compressed `tar` archive for a pattern: `bzgrep --recursive "{{search_pattern}}" {{path/to/tar/file}}` - Search `stdin` for lines that do not match a pattern: `cat {{/path/to/bz/compressed/file}} | bzgrep --invert-match "{{search_pattern}}"`