How to execute client commands ?

Hello ,
is possible to develop an interface to execute host client commands (cmd) for example to copy a file to the client pc or to run Adobe reader ?

Regards
Gianpaolo

Depending on your security settings yes…Using php exec
http://php.net/manual/en/function.exec.php

Hi,
do you mean client side or server ?

Serverside… On some setups you have to allow it (it can be blocked via disable_functions in php.ini)