This module provides a Unix-like command `colgrep'. This commad will "grep" along a specified column over all the row of a given file, and every (the whole) row which is hit by that "grep" will be output. =head1 DESCRIPTION Copyright (c) 2021 Toshiyuki SHIMONO. All rights reserved. This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.