Acesse o terminal SSH do VPS e digite os comandos abaixo:
Para instalar no CentOS:
wget http://prdownloads.sourceforge.net/webadmin/webmin-1.590-1.noarch.rpm
rpm -U webmin-1.590-1.noarch.rpm
Para instalar no Ubuntu/Debian:
apt-get install perl libnet-ssleay-perl openssl libauthen-pam-perl libpam-runtime libio-pty-perl apt-show-versions python
wget http://prdownloads.sourceforge.net/webadmin/webmin_1.590_all.deb
dpkg --install webmin_1.590_all.deb
Instalando com arquivo tar.gz:
cd /tmp
wget http://prdownloads.sourceforge.net/webadmin/webmin-1.590.tar.gz
gunzip webmin-1.590.tar.gz
tar xf webmin-1.590.tar
cd webmin-1.590
./setup.sh /usr/local/webmin
