This is the authoritative guide to the hottest new unix utility in years, coauthored by its creator, larry wall. Perl is a language for easily manipulating text, files, and processes. Perl provides a more concise and rea...This is the authoritative guide to the hottest new unix utility in years, coauthored by its creator, larry wall. Perl is a language for easily manipulating text, files, and processes. Perl provides a more concise and readable way to do many jobs that were formerly accomplished (with difficulty) by programming in the c language or one of the shells.