Hi, is possible read and write on /dev/port via a normal user (not root)? > sh-3.00$ ls -l /dev/port > crw-rw-rw- 1 root kmem 1, 4 29 dic 10:38 /dev/port > sh-3.00$ cat -v /dev/port > cat: /dev/port: Operation not permitted > sh-3.00$ Many thanks -- Dario Lesca <d.lesca@xxxxxxxxxx>