# rgrep > Recursively find patterns in files using regular expressions. > Equivalent to `grep -r`. > More information: . - Recursively search for a pattern in the current working directory: `rgrep "{{search_pattern}}"` - Recursively search for a case-insensitive pattern in the current working directory: `rgrep {{[-i|--ignore-case]}} "{{search_pattern}}"` - Recursively search for an extended regular expression pattern (supports `?`, `+`, `{}`, `()` and `|`) in the current working directory: `rgrep {{[-E|--extended-regexp]}} "{{search_pattern}}"` - Recursively search for an exact string (disables regular expressions) in the current working directory: `rgrep {{[-F|--fixed-strings]}} "{{exact_string}}"` - Recursively search for a pattern in a specified directory (or file): `rgrep "{{search_pattern}}" {{path/to/file_or_directory}}`