In keeping with your recommended best practices of error checking at each step, the main code should be 
chdir $dir           or die "ERROR: Could not change directory to $dir
+";
mkdir "FirstSubDir"  or die "ERROR creating FirstSubdir:$!";
mkdir "SecondSubDir" or die "ERROR creating SecondSubDir:$!";

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                All power corrupts, but we need electricity.

In reply to Re^2: Help with exercise by NetWallah
in thread Help with exercise by codeKnight

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