If nothing returns, it is not installed.
Yes and no.. Yes - With a lot of tweaking and modifications, it is possible. No - Apple does not permit OS X to be installed on non-Apple hardware. (Though OS X Server can be installed as a VM)
simply type, startx in the command prompt.
Android X window system is an open source Java implementation of X windows.
The Mac OS X Server software (See links below) can be installed on any modern Apple Mac computer or can be purchased ready installed on a Mac Mini ready to go.
Many operating systems are used on servers, including Linux, Windows Server, Solaris, FreeBSD, and Mac OS X Server.
If a server has installed it, you can press "y" and type "rtd". If you want to install it on your server. You will have to look for the AMX Mod X plugin.
It's a command to start the X server for running Linux in graphical mode, if you have any of the desktop environments and/or window managers installed.
They are all operating system.
The Xming server is a display server for the X Window System, used in Windows XP and later installments of Windows. It's simplistic nature makes it easy to download.
Here are the list of operating system according to the maker:MicrosoftWindows NT 3.1Windows NT 3.5Windows NT 3.51Windows NT 4.0Windows 98Windows MEWindows 2000Windows XPWindows Server 2003Windows VistaWindows Server 2008Windows 7Windows Server 2008 R2Windows 8Windows Server 2012MacMac OS X 10.0 CheetahMac OS X 10.1 PumaMac OS X 10.2 JaguarMac OS X 10.3 PantherMac OS X 10.4 TigerMac OS X 10.5 LeopardMac OS X 10.6 Snow LeopardMac OS X 10.7 LionOS X 10.8 Mountain Lion