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Your suggestion is basically sound - and I knew that already. My problem was that I wanted the script to replace itself automatically. Thanks for your suggestion and enjoy your time here, if you find it only partly as worthwhile as I have then it will be an immensely rewarding experience for you.
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Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
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Want more info? How to link
or How to display code and escape characters
are good places to start.