To install webmin in Ubuntu 12.04, open terminal and add the following repository:
1- Edit /etc/apt/sources.list file
sudo vi /etc/apt/sources.list
2- Add the following lines
deb http://download.webmin.com/download/repository sarge contrib deb http://webmin.mirror.somersettechsolutions.co.uk/repository sarge contrib
Save and exit the file
3- Now you need to import GPG key
wget http://www.webmin.com/jcameron-key.asc sudo apt-key add jcameron-key.asc
4- Update the source list
sudo apt-get update
5- Now install webmin
sudo apt-get install webmin
Now to access webmin open your browser and enter: http://serverip:10000/
That`s all.
via Unixmen