Another possibility is you've got trailing whitespace on your name. What happens when you $serial =~ s/\s//g? You can also see what your variable literally contains by printing w/ delimiters, a la print "x${serial}x"

And ++ for rename and File::Copy.

#11929 First ask yourself `How would I do this without a computer?' Then have the computer do it the same way.

In reply to Re: changing a file name, extension not showing up by kennethk
in thread changing a file name, extension not showing up by mark4444az

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