So you’ve loaded up a copy of Ubuntu Server 14.04 (Trusy Tahr) on your VM, and because you don’t feel like doing everything via the command line, you now want the ease of use that Webmin supplies.
No problem, grabbing it and installing Webmin on an Ubuntu Server remains a relatively simple thing to do.
First, log into your server and edit the sources file:
sudo nano /etc/apt/sources.list
Add this line:
deb http://download.webmin.com/download/repository sarge contrib
Save the file and exit the nano editor. Next we need to grab and install the PGP key:
wget -q http://www.webmin.com/jcameron-key.asc -O- | sudo apt-key add -
With that all done, now it is a simple matter to install the latest version of Webmin as you would any other Ubuntu package:
sudo apt-get update sudo apt-get install webmin
Once the install has completed, you should be able to access the webmin console by logging in to either https://localhost:10000/ or https://yourIPaddress:10000/ (Note the HTTPS requirement).
Remember, you need to log in with a user account that has sudo rights and of course a password (i.e., don’t log in with the root user).
Related Link: http://www.webmin.com/