rgrep — specialized command-line utility analogous to the utility grep, enabled recursive search (optional grep -r).
grep (short for Global Regular Expression Print) is a powerful console utility for searching data in a text file (the file list) of any type. Search for used compact matching algorithm Boyer-Moore, outstanding pattern, unique and predefined outcome, in the form of strings containing the sample. Utility is part of the project GNU (GNU Grep).
The functionality of grep is extensive, it can be used to search just as files and rows, or multiple rows in the file. The utility finds the string meets the specified search pattern, ordinary string or regular expression and prints them (if the output is not canceled with a special key).
rgrep is completely analogous to grep, the only distinguishing feature of the tool is the fact that the “default” search is done recursively and not only in the current directory as the original is looking for a utility running with no additional options.
License: GNU General Public License version 2.0 (GPLv2)