I’m using Unetbootin all the time to write ISOs to my USB Pen drive, and having to enter root password all the time irritates me…
I know what I’m doing (at least I’d like to think so), so I altered the sudoers file. At the terminal I typed
sudo visudo
And added the following at the end of the file
%myusername ALL = NOPASSWD: /usr/bin/unetbootin
This allowed me to now run unetbootin directly without wasting time asking for root password. Just replace myusername with your username and you’r done. You can also use this technique to commands like /usr/bin/apt-get
DISCLAIMER: Use this tip at your own risk! Don’t blame me if you mess up your system!