X11 Forwarding Without Installing X
I discovered that if you had a beefy server that you wanted to execute apps on using X11 forwarding, you don’t need to install X to accomplish this.
Just:
yum install xorg-x11-xauth
(and optionally install liberation-fonts if you use RedHat and need the fonts package). For other distros, install whatever package that provides /usr/bin/mkxauth and /usr/bin/xauth.