ack
ack
TLDR
Search for files containing a string or regular expression in the current directory recursively
$ ack "[search_pattern]"
Search for a case-insensitive pattern
$ ack --ignore-case "[search_pattern]"
Search for lines matching a pattern, printing [o]nly the matched text and not the rest of the line
$ ack -o "[search_pattern]"
Limit search to files of a specific type
$ ack --type=[ruby] "[search_pattern]
Do not search in files of a specific type
$ ack --type=no[ruby] "[search_pattern]
Count the total number of matches found
$ ack --count --no-filename "[search_pattern]"
Print the file names and the number of matches for each file only
$ ack --count --files-with-matches "[search_pattern]"
List all values that can be used with --type
$ ack --help-types
