You could add checks for $ip and $duration in your if($ret) condition. Or you could do sometheting like: 
    $ip =  "No IP found" unless defined $ip;
    $duration =  "No Duration found" unless defined $duration;

[download]
That will let you see exactly in which circumstances you are getting undefined values and which values are undefined. Generally it's a good idea to check for definedness of values and either skip trying to print them or else substitute a default value.

In reply to Re: Getting "uninitialized value" that I can't figure out... by jZed
in thread Getting "uninitialized value" that I can't figure out... by dguntner

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