[support] passing vars

Hi, Please excuse this seemingly retarded mail. While fun, PHP is more then 4 handfuls and I only have 2. An example php script; $username = foo; exec('/root/script.sh'.($username)); My script.sh file; #!/bin/tcsh mkdir /root/$username When I execute my PHP script, I get this; sh: /root/script.shfoo: No such file or directory I was hoping to pass the PHP var of $username to mkdir in the tcsh script and make a directory called /root/foo. I don't understand whats going on. Any ideas? - aurf