# ag > The Silver Searcher. Like ack, but faster. - Find files containing "foo": `ag foo` - Find files containing "FOO" case-insensitively: `ag -i FOO` - Find "foo" in files with a name matching "bar": `ag foo -G bar` - Find files whose contents match a regular expression: `ag '^ba(r|z)$'` - Find files with a name matching "foo": `ag -g foo`