tldr/pages/linux/zgrep.md

# zgrep

> Grep text patterns from files within compressed file (equivalent to grep -Z).

- 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 {{pattern}} {{path/to/compressed/file}}`

- Output count of lines containing matched pattern in a compressed file:

`zgrep -c {{pattern}} {{path/to/compressed/file}}`

- Display the lines which don’t have the pattern present (Invert the search function):

`zgrep -v {{pattern}} {{path/to/compressed/file}}`

- Grep a compressed file for multiple patterns:

`zgrep -e "{{pattern_1}}" -e "{{pattern_2}}" {{path/to/compressed/file}}`

- Use extended regular expressions (supporting `?`, `+`, `{}`, `()` and `|`):

`zgrep -E {{regular_expression}} {{path/to/file}}`

- Print 3 lines of [C]ontext around, [B]efore, or [A]fter each match:

`zgrep -{{C|B|A}} {{3}} {{pattern}} {{path/to/compressed/file}}`