The Linux System Administrator's Guide. LinuxCommand.org: Learn the Linux command line. Write shell scripts. Unix. Unix (all-caps UNIX for the trademark) is a family of multitasking, multiuser computer operating systems that derive from the original AT&T Unix, developed in the 1970s at the Bell Labs research center by Ken Thompson, Dennis Ritchie, and others.[3] Many clones of Unix have arisen over the years, of which Linux is the most popular, having overtaken the popularity of "true" Unix on server platforms since its inception in the early 1990s.
Overview. UnixTutorials - Tutorials and howtos for Unix based operating systems...