cwd() can be changed to just '.' 

opendir my $dir, '.'
   or die "Can't read current directory (".cwd()."): $!\n";

[download]

That applies to the OP too. He could drop $dirname from the command line both simplifying the code and removing his bug.

In reply to Re^2: recognizing OS by ikegami
in thread recognizing OS by PerlZealot

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