Subject pages attached to craig:computer/prog/regexp

Regular Expressions: he historical Simple Regular Expressions, which provide backward compatibility, but which may be withdrawn from a future issue of this specification set the improved internationalised version that complies with the ISO/IEC 9945-2:1993 standard.
URL: http://www.opengroup.org/onlinepubs/7908799/xbd/re.html

2.	Grep tutorial [extended regular expressions] rep is not only one of the most useful commands, but also, mastery of grep opens the gates to mastery of other tools such as awk , sed and perl . URL: http://pegasus.rutgers.edu/~elflord/unix/grep.html

sed . . . the stream editor: Sed is extremely powerful, and you can do things in sed that you can't do in any standard word processor. And because sed is external to the word processor and comes with every Unix system in the world, once you learn sed you'll have a very handy tool in your toolkit, even if (like me) you rarely use Unix.
URL: http://www.student.northpark.edu/pemente/sed/index.htm

sed tutorial: This tutorial is meant as a brief introductory guide to sed that will help give the beginner a solid foundation regarding how sed works. It's worth noting that the tutorial also omits several commands, and will not bring you to sed enlightenment in itself.
URL: http://pegasus.rutgers.edu/~elflord/unix/sed.html