Open Terminal as root
From Amahi Wiki
Sometimes, you'll be asked to open a Terminal window, and become root.
To do that from a remote computer, SSH into your HDA.
NOTE: Precede each command with sudo
for Ubuntu and Fedora if you did not create a root password.
Once the Terminal window is open, type the following command:
su -
You'll be asked for the root password (for Ubuntu and Fedora, the password is your user password):
[gb@hda ~]$ su -
Password:
You now have a Terminal open, and you're logged as root:
[root@hda ~]#
To exit back to the standard user:
[root@hda ~]$ exit
[gb@hda ~]#