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What is unix and is linux a unix system


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What is unix and is linux a unix system

Unix is the name of an operating system. And unix is a registered trademark. This is what makes things murky.

One of my favorite books is The Design and Implementation of the 4.3BSD UNIX Operating System. That book is out of print, but a newer book is available: The Design and Implementation of the 4.4BSD Operating System. Note that "UNIX" was dropped from the title. BSD no longer has the legal right to call itself UNIX. It's not alone. Linux has never had the legal right to call itself UNIX.

There is a set of operating systems that includes Solaris, HP-UX, AIX, Linux and BSD among several others. We can't legally call that set, um, you-know-what. But understand that Linux is not out in left field. It is a co-equal member of that set.

We have a lot of threads that shed more light....

Don't hate me because I'm stupid...
A short history of UNIX by l.madden@ic.ac.uk
what is unix?
Just curious, does Unix stand for anything?
Click here for the best unix in the world!!!!
SCO sues IBM
Halloween IX: It Ain't Necessarily SCO
GNU and Linx: Different or the same?
The history of UNIX and the ideas behind it

Last edited by Perderabo; 04-04-2005 at 03:35 PM..
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MBK_WORK_LIB(1) 					     MBK ENVIRONMENT VARIABLES						   MBK_WORK_LIB(1)

NAME
MBK_WORK_LIB - define the mbk working directory
SYNOPSYS
c-shell running setenv MBK_WORK_LIB unix path
ORIGIN
This software belongs to the ALLIANCE CAD SYSTEM developed by the ASIM team at LIP6 laboratory of Universite Pierre et Marie CURIE, in Paris, France. Web : http://asim.lip6.fr/recherche/alliance/ E-mail : alliance-users@asim.lip6.fr
DESCRIPTION
MBK_WORK_LIB sets the directory where are saved the results of an invocation of mbk or genlib. This directory is considered to be, from an mbk point of view, read and write. Also, when a file is searched for reading, the first directory to be looked at is the MBK_WORK_LIB, and then the one defined in MBK_CATA_LIB(1). The unix path argument must be a actually accessible path on your host machine.
ERRORS
"mbk_fopen : can't open file 'unix_path/file.xx'" This occurs when either the unix path is irrelevent, or when the file doesn't exist if it is open for reading, or when you don't have the right on the file or directory while trying to write it.
EXAMPLE
setenv MBK_WORK_LIB ~fred/crechan/uom
SEE ALSO
mbk(3), genlib(1), MBK_CATA_LIB(1).
BUG REPORT
This tool is under development at the ASIM department of the LIP6 laboratory. We need your feedback to improve documentation and tools.
ASIM
/LIP6 October 1, 1997 MBK_WORK_LIB(1)

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