Rofi is a free and open source application typically used in the context of very minimal graphical environments on Linux (simple windows manager like i3, instead of full fledged desktop environments like GNOME or KDE). Rofi has multiple functions: it can work as a window switcher, an application launcher or a run dialog, and can be used as a replacement for dmenu.
The default Graphical User Interface for Redhat Enterprise Linux 7 server is Gnome. If from some reason you have decided to install KDE Desktop or to switch from a RHEL7’s default GUI gnome to KDE this short tutorial will provide you with easy to follow steps.
Installation of KDE desktop manager on RHEL 7
Here we assume that you currently do not have any desktop manager installed on your system. To install KDE desktop manager on RHEL 7 execute below command:
[root@rhel7 ~]# yum groupinstall 'X Window System' 'KDE'