ag

The Silver Searcher. Like ack, but aims to be faster. More information: https://manned.org/ag.

• Find files containing “foo”, and print the line matches in context:

ag foo

• Find files containing “foo” in a specific directory:

ag foo {{path/to/directory}}

• Find files containing “foo”, but only list the filenames:

ag {{[-l|--files-with-matches]}} foo

• Find files containing “FOO” case-insensitively, and print only the match, rather than the whole line:

ag {{[-i|--ignore-case]}} {{[-o|--only-matching]}} FOO

• Find “foo” in files with a name matching “bar”:

ag foo {{[-G|--file-search-regex]}} bar

• Find files whose contents match a regex:

ag '{{^ba(r|z)$}}'

• Find files with a name matching “foo”:

ag {{[-g|--filename-pattern]}} foo