Regular Expressions
Basics of Perl Regular Expressions (?regexp?). Jon Radoff // jradoff@charter.net //
Biophysics 101, Fall 2002. Simplistic use of a regular expression: $_ = "this is a
test";. if(/est/). {. print "Match!
";. } In the above code, the /est/ is the regular
expression. It succeeds because est is a substring of this is a test. The string may
also ...