How to Find Out More

Many books on the UNIX System contain discussions of tools and filters. One excellent work, with lots of examples, is

• Powers, Shelley et al. UNIX Power Tools. 3rd ed. Sebastopol, CA: O’Reilly & Associates, 2002.

A dictionary-like reference, similar in style to the UNIX man pages, is

• Robbins, Arnold. UNIX in a Nutshell. 4th ed. Sebastopol, CA: O’Reilly Media, 2005.

Information on GNU project tools, and how to obtain them, is available at the GNU web site, http://www.gnu.org/.