The print statement will still work - an undef value will print as the empty string.

Sorry, I mistook line 71 for a similar looking line (the one in the foreach $intersect (@uniq) loop.)

If this is where you problem is: 

my $refarray3 = $matchedfiles[5];
print "File: ${$refarray3}[0] in directory ${$refarray3}[1]\n";

[download]
then maybe $refarray3 is undef. How many elements are there in the @matchedfiles array?

In reply to Re^5: Uninitialized value in concatenation (.) or string? by pc88mxer
in thread Uninitialized value in concatenation (.) or string? by jbush82

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