Try a little something like this: 
$mon =~ s/(.+)(\..+)/$1_`date \+\%m\%d\%Y`\.$2/e;

[download]
Update : /e added to end of regex to fix error. (Thanks to EvanK)

In reply to Re: Creating Filenames using variables by Pahrohfit
in thread Creating Filenames using variables by rass

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