http://etext.lib.virginia.edu/services/helpsheets/unix/regex.html has a good introduction to Regular Expressions – grep, sed, and friends.
It includes a brief discussion on Backreferences (aka “the stuff that * matched”)
http://etext.lib.virginia.edu/services/helpsheets/unix/regex.html has a good introduction to Regular Expressions – grep, sed, and friends.
It includes a brief discussion on Backreferences (aka “the stuff that * matched”)
