This is the Debian GNU/Linux prepackaged version of the grep program. Currently Wichert Akkerman maintains the Debian GNU/Linux version of grep. This package was created from the grep sources as found on the GNU mirrors. Like all GNU software, grep is distritubed under the terms of the GNU General Public License, version 2. On Debian GNU/Linux system you can find a copy of this license in /usr/share/common-licenses/GPL'