login as: root
root@192.168.0.13's password:
Welcome to Ubuntu 13.04 (GNU/Linux 3.8.0-19-generic x86_64)

 * Documentation:  https://help.ubuntu.com/
Last login: Tue Jun 11 23:56:24 2013 from 192.168.0.13
root@ubuntu:~# ls
root@ubuntu:~# login as: root
Password:
root@ubuntu:~# ;s
-bash: syntax error near unexpected token `;'
root@ubuntu:~# ls
root@ubuntu:~# ls
root@ubuntu:~# cp /etc/network/interfaces /etc/network/interfaces.bkp.orig
root@ubuntu:~# rm /etc/network/interfaces
root@ubuntu:~# touch /etc/network/interfaces
root@ubuntu:~#