Sudo
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To Edit sudo users run As Root
visudo
Add the entry like this.
## Allow root to run any commands anywhere root ALL=(ALL) ALL matt ALL=(ALL) ALL
Now the user "matt" will have root access with out using the root password.
- To Allow Mythtv to shutdown the system
sudo visudo
And add this to the bottom
%mythtv ALL = NOPASSWD: /sbin/halt