Work the Shell - Numerology, or the Number 23

Use a shell script to do basic numerology.

Thanks to Dave Sifry for his help with that spiffy little Perl code snippet.

Dave Taylor is a 26-year veteran of UNIX, creator of The Elm Mail System, and most recently author of both the best-selling Wicked Cool Shell Scripts and Teach Yourself Unix in 24 Hours, among his 16 technical books. His main Web site is at, and he also offers up tech support at


Dave Taylor has been hacking shell scripts for over thirty years. Really. He's the author of the popular "Wicked Cool Shell Scripts" and can be found on Twitter as @DaveTaylor and more generally at


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(Working with linux which

Mark Anthnoy's picture

(Working with linux which has 6 characters)

... letter l has value 12

... letter i has value 9

... letter n has value 14

... letter u has value 21

... letter x has value 24
very funny
Football Caricatures

Thank you

burun estetigi's picture

thanks for sharing, nice to see the final product and how it was created Burun estetiği


Estetik's picture

The first thought that came to mind was HM what;s the sun getting ready to do? 2nd thought isn’t 2012 coming in about 2 and 1/2 years. 3 Whats going to happen then and no I was not thinking the end of the world but anythings possible. Shake my head the sun is dead, suns die violently my friends, ooooh!