**ack 2 is no longer being maintained. ack 3 is the latest version.**

ack is a grep-like search tool optimized for source code.

print lines matching a time range

The source code for the beyondgrep.com website

Set of text- and file-oriented utilities for processing texts, files and piping

Like 'grep' but for searching within blocks of code.

a parallel xzgrep wrapper

Tom Christiansen's perl version of the grep utility

Command line utilities for dealing with JSON-formatted log files

Simple Perl grep-like script to search for lines in a file that match specified pattern

A concise implementation of the grep utility. It print lines matching a given pattern.

Easily tailor terminal output to meet your needs with simple perl scripts