community man page
ack
A search tool like `grep`, optimized for developers. See also: `rg`.
Examples
Search for files containing a string or `regex` in the current directory recursively
Search for a case-insensitive pattern
Search for lines matching a pattern, printing only the matched text and not the rest of the line
Limit search to files of a specific type
Do not search in files of a specific type
Count the total number of matches found
Print the file names and the number of matches for each file only
List all the values that can be used with `--type`