Even if you know there's only one .txt file in the directory, you still need to call glob in an array context 
my @txt = glob("$dir/*.txt");

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... or a loop 
while ( defined(my $txt = glob("$dir/*.txt")) ) {
}

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When you call glob in a scalar context, it returns the file the first time, then returns nothing the next time to let you know there are no more files.

In reply to Re: Glob Misbehavin' by no_slogan
in thread Glob Misbehavin' by Sprad

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