#Installing on Debian
$ sudo su
$ wget http://prdownloads.sourceforge.net/webadmin/webmin_1.941_all.deb
$ dpkg --install webmin_1.941_all.deb
$ apt install perl libnet-ssleay-perl openssl libauthen-pam-perl libpam-runtime libio-pty-perl apt-show-versions python
$ nano /etc/apt/sources
, paste deb https://download.webmin.com/download/repository sarge contrib
$ cd /root
$ wget https://download.webmin.com/jcameron-key.asc
$ apt-key add jcameron-key.asc
$ apt install apt-transport-https
$ apt update
$ apt install webmin
open https://localhost:10000 user=root password=? yours root password