Note: Before starting the installation make sure ionCube Loaders are enabled. You may refer to the following guide Enable_Ioncube_cPanel. Please make sure that the Ioncube loader is selected for the backend copy of PHP.
In order to install Softaculous on your cPanel/WHM CentOS 6.X and CentOS 7.X dedicated server or Cloud VPS, run the following commands via SSH:
wget -N http://files.softaculous.com/install.sh
chmod 755 install.sh
After that, Softaculous will be installed on your cPanel/WHM server.