Wednesday, August 28, 2013

History of unix, unix hstory, unix fetures

History of unix,unix hstory,unix features

History  of  Unix:
Journey  of  unix  started from  MULTICS(multiplex information and computing  system).This project was  started by AT&t,GE in the  year of 1965.Objective  this  process is  to provide multi user capability.It was partially succeeded to two users.
In 1969 unix  was developed ,it  is extension of MULTICS can  provide  multiuser capability to 100 users. This  was developed by    KENTHOMPSON&DENNIES RITCHIE.UNICS was developed by 80%  c language and 20% assembled language.
Popular unix was developed  in 1973 completely developed by c language.

FEATURES OF UNIX:
MULTITASKING&MULTIUSER CAPABILITY: At a  time  several  works can be done ,that is called multiTasking.  At time users can login into machine that is called multiuser capability.
Programming facility
Portability
Security
 
Network support

Unix has various flavours.differnt flavours will support  different   hardware.

Vender                           FLAVOUR
AT&T                              sys3&sys5
SUNMICROSYSTEMS          SOLARIES
IBM                                AIX 
HP                                  HP-UX
BSD                                BSD free unix