The array @ARGV holds the arguments you've passed to the script. So it's not that hard to handle this. Just add 

my $extra_args;
if ($ARGV[0] eq "/y") {
$extra_args = "/y";
}
system ("C:\\WINDOWS\\System\\deltree.exe $extra_args) and die "Couldn
+'t delete tree: $!\n";

[download]

That's pretty basic, though, and not terribly extensible; depending on the other features you want to add, you might step up to Getopt::Std or Getopt::Long to process command-line arguments. To extend things as they are, look into turning @ARGV into a space-separated string so you can pass a whole bunch of arguments to the deltree command. (I'll leave that up to you, as a nice learning exercise).

Also note: die STRING is handier than print STDERR STRING. Furthermore, since you're on Windows (evidently) your #! line is nonsensical (but, in the current context, harmless).

HTH

Philosophy can be made out of anything. Or less -- Jerry A. Fodor

In reply to Re: help adding a paramter to an executable i am running by arturo
in thread help adding a paramter to an executable i am running by rimuladas

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