Loading Debian (Ubilinux) on the Edison
Shawn Hymel 
Add Some Security
By default, Ubilinux gives you access to the root account and a user account called "edison." This is a great starting point, as it allows you to do anything in the operating system. However, it is not secure. If someone finds out the IP address of the Edison, they could log in with the default username and password.
One of the easiest fixes for improving security is to create a unique user account, change the edison user password (or delete the whole account!), and change the root password. You can skip creating a new user if you like, but it is still highly recommended that you change passwords for both root and edison.
If you are logged in on the "edison" account, run:
logout
At the login screen, log back in using the root account:
ubilinux login: root
Password: edison
Create a New User
Choose a username for your new account and think of a memorable password. Run the command:
adduser --ingroup users <USERNAME>
You will be prompted to enter your password twice and asked for some identifying information. Feel free to fill them in or hit 'enter' to accept the default of blank (no information). Type 'y' and press 'enter' when prompted about the information being correct.
Change the "edison" Account
It is advisable that you either remove the "edison" account or at least change the password.
Change Password
If you want to keep the "edison" account, then you should consider changing the password to something more secure:
passwd edison
You will be prompted to enter the new password twice.
Remove Account
The better option is to remove the account altogether, as guessing a non-default username is more difficult. While logged in as root, enter:
deluser --remove-home edison
Change root Password
The last step is changing the default root password. This is crucial in preventing unauthorized people from easily signing in to your Edison with root access. While logged in as root, run the command:
passwd
You will be prompted to enter the new password twice.