On remote systems sometimes a web-based tool can be very handy. Webmin is such a tool that has been well maintained for decades. To install quickly on a Ubuntu Server without having to manage dependencies and keeping it updated as part of normal OS update operations installing from a PPA Repo is handy.
sudo echo "deb http://download.webmin.com/download/repository sarge contrib" >> /etc/apt/sources.list
wget -q http://www.webmin.com/jcameron-key.asc -O- | sudo apt-key add -
#OpenSuse Repo Key
sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 977C43A8BA684223
sudo apt-get update
sudo apt-get install webmin
After this you should be able to connect to your webmin instance on port 10000
Security note: I would never allow direct access to Webmin on a remote server but rather tunnel port 10000 over SSH !