Note: Before starting the installation make sure ionCube Loaders are enabled. For that go to WHM and click on Tweak Settings. Please make sure that the Ioncube loader is selected for the backend copy of PHP. Now SSH to your server and enter following commands:
cd /usr/local/cpanel/whostmgr/docroot/cgi wget -N http://www.softaculous.com/ins/addon_softaculous.php chmod 755 addon_softaculous.php
Now go to : WHM > Plugins (Add-Ons on older versions than 11) > Softaculous - Instant Installs The following webpage will open if the installation was successful.
Now, just wait for the scripts to get downloaded. The download status is shown in the iFRAME.
Thats it the installation of Softaculous is completed!