Difference between revisions of "Unix"

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[[Compression]]
 
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[[Filters]]
  
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[[Shell_Redirection]]
  
 
[[ChMod]]
 
[[ChMod]]

Revision as of 07:37, 6 February 2005

http://www.ugu.com/

UNIX was originally developed at Bell Laboratories as a private research project by a small group of people starting in 1969. This group had experience with a number of different operating systems research efforts in the 1970's. The goals of the group were to design an operating system to satisfy the following objectives:

   * Simple and elegant
   * Written in a high level language rather than assembly language
   * Allow re-use of code 

Typical vendor operating systems of the time were extremely large and all written in assembly language. UNIX had a relatively small amount of code written in assembly language (this is called the kernel) and the remaining code for the operating system was written in a high level language called C.

Compression

Filters

Shell_Redirection

ChMod

ViewFiles

VIvisualEdit

SedStreamEditor

AwkPatternMatching

SinkFiles