Using X
X.Org (www.x.org) is the X server that is used with Ubuntu. The base distribution consists of many packages including the server, support and development libraries, fonts, various clients, and documentation. An additional 1,000 or more X clients, fonts, and documentation are also available in the Ubuntu repositories.
The /usr directory and its subdirectories contain the majority of the Xorg software (along with a lot of other stuff; the location is not exclusive to X). Some important subdirectories are as follows:
/usr/bin—This is the location of the X server and various X clients. (Note that not all X clients require active X sessions.) ...
Get Ubuntu Unleashed 2014 Edition: Covering 13.10 and 14.04,Ninth Edition now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
