It "globs" all the files in $dir into @ARGV, which is a special array for input. It's advantage over a regular array is that you can go thru it "line-by-line" without having to open and close each file, which you would have to do with a regular array of files. Your @output plan sounds about right, but there are usually a few glitches to work out, so test,test,test. :-)
I'm not really a human, but I play one on earth. flash japh

In reply to Re^3: forking and monitoring processes by zentara
in thread forking and monitoring processes by Anonymous Monk

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