# zgrep > Grep text patterns from files within compressed file (equivalent to `grep -Z`). > More information: . - Grep a pattern in a compressed file (case-sensitive): `zgrep {{pattern}} {{path/to/compressed/file}}` - Grep a pattern in a compressed file (case-insensitive): `zgrep {{[-i|--ignore-case]}} {{pattern}} {{path/to/compressed/file}}` - Output count of lines containing matched pattern in a compressed file: `zgrep {{[-c|--count]}} {{pattern}} {{path/to/compressed/file}}` - Display the lines which don’t have the pattern present (Invert the search function): `zgrep {{[-v|--invert-match]}} {{pattern}} {{path/to/compressed/file}}` - Grep a compressed file for multiple patterns: `zgrep {{[-e|--regexp]}} "{{pattern_1}}" {{[-e|--regexp]}} "{{pattern_2}}" {{path/to/compressed/file}}` - Use extended regular expressions (supporting `?`, `+`, `{}`, `()` and `|`): `zgrep {{[-E|--extended-regexp]}} {{regular_expression}} {{path/to/file}}` - Print 3 lines of [C]ontext around, [B]efore, or [A]fter each match: `zgrep --{{context|before-context|after-context}} 3 {{pattern}} {{path/to/compressed/file}}`