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#!/bin/sh 
# if current iTunes pkg exists, delete it b/c of Installer bug
...
if [ -e $2Applications/iTunes.app ] ; then
rm -rf $2Applications/iTunes.app 2> /dev/null
fi

$file = "testdir /";       #oops, typo!
system( "rm -rf $file" );    #double oops
system( "rm -rf '$file'" );  #will probably get an error
                             # from the command, but your
                             # root dir is still there.