ack

A search tool like grep, optimized for developers. See also: rg, which is much faster. More information: https://beyondgrep.com/documentation.

ack "search_pattern"

ack --ignore-case "search_pattern"

ack -o "search_pattern"

ack --type ruby "search_pattern"

ack --type noruby "search_pattern"

ack --count --no-filename "search_pattern"

ack --count --files-with-matches "search_pattern"

ack --help-types