in reply to filehandle in warning not what I expected...

Perl only resets the line counter when opening the file. For each line in $remedy_file, you read many lines of $interface_data. It seems very inefficient to me, but that's a different issue. If, instead of seeking, you would just (re)open the file, you'll see more sensible numbers.
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Re^2: filehandle in warning not what I expected...
by spstansbury (Monk) on Dec 27, 2010 at 21:51 UTC

    Thanks for the input - you're right, it's inefficient, I will follow Corian's advice and read the file into a hash.

    But what really confused me is that the warning referenced the interface file and not the actual data file that the undef field was parsed from...

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      Or it's simply showing the last filehandle that I read from...

[reply]
        Right. Perl isn't tagging any values with the source it came from; let alone undefined values. In fact, if it came from a file, it has to be defined.
[reply]

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