Installation steps for both cpanel and plesk
Login to the terminal
Use the following commands
cd /usr/src rm -f osm* wget https://download.configserver.com/osminstaller.tgz tar -xzf osminstaller.tgz perl osminstaller.pl ipv4(replace ipv4 with ipv6 for ipv6 license)rm -fv osm*
Now you can login to the cpanel WHM or plesk for GUI management