The UNIX* operating system was designed to let a number of programmers access the computer at the same time and share its resources. ... It also meant that the operating system could be upgraded without having all the customer's data inputted again. And new versions of UNIX were backward compatible with older versions,
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www.bell-labs.com/history/unix/tutorial.html
www.bell-labs.com/history/unix/tutorial.html
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Unix - Wikipedia, the free encyclopedia
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Unix (officially trademarked as UNIX , sometimes also written as Unix with small caps) is a computer operating system originally developed in 1969 by a group of AT&T employees at Bell Labs, includi...
en.wikipedia.org/wiki/Unix
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Beginners guide to the UNIX / Linux operating system. Eight simple tutorials which cover the basics of UNIX. ... Introduction to the UNIX Operating System...
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www.ee.surrey.ac.uk/Teaching/Unix/
www.ee.surrey.ac.uk/Teaching/Unix/
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With System V, AT&T tell us that this is THE UNIX operating system and hopes it will rule the world. On initial inspection, System V is well typed and has long manuals. Error messages are now wordy and it is almost possible to say that you don't need the source to find out why something happens the way it does.
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www.hillside.co.uk/articles/typing.html
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The UNIX Operating System: Mature, Standardized and State-of-the-Art ... The UNIX system's increasing popularity spawned the development of a number of variations of the UNIX operating system in the 1980s, and the existence of these caused a mid-life crisis. Standardization had progressed slowly and methodically in...
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www.unix.org/whitepapers/wp-0897.html
www.unix.org/whitepapers/wp-0897.html
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The Open Group holds the UNIX trademark in trust for the industry, and manages the UNIX trademark licensing program. ... You are here: The UNIX System Home Page...
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www.unix.org/
www.unix.org/
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Unix is a multi-user, multi-tasking operating system. ... A multi-tasking operating system is one which can run multiple tasks (such as programs, applications, etc) at the same time. This is usually done by allocating a few milliseconds to each task in turn, so it appears that all the tasks are running simultaneously.
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www.zoic.org/training/unixbasics/x174.html
www.zoic.org/training/unixbasics/x174.html
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Comprehensive information and resources about the Linux Operating System. ... Linux is a free Unix-type operating system originally created by Linus Torvalds with the assistance of developers around the world. Developed under the GNU General Public License , the source code for Linux is freely available to everyone.
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