Here's a short one-liner that will let you interactively test a regex from the command line. You supply the regex as an argument and then you subsequently type in strings. It will print "Yes" for a match, and "No" for a non-match.
perl -lpe'BEGIN{$r=pop} $_=/$r/?"Yes":"No"' your_regex_here

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Or for Win32: 
perl -lpe"BEGIN{$r=pop} $_=/$r/?'Yes':'No'" your_regex_here

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In reply to Interactively Test Regexes by kelan

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