It all started in 1965 with MULTICS (Multiplexed Information and Computing System) in Cambridge, Massachusetts. MULTICS is an early and influential time sharing Operating System, based on single level memory concept.
First UNIX system was created in
1973 by Dennis Ritchie (who used 80% of C language) and Ken Thompson (who used
20% Assembly Language). In 1979 Dennis Ritchie created his own version.
UNIX (initially called as UNICS –
Uniplexed Information and Computing System) was created in 1973 at the Bell
Labs Research Center by Ken Thompson and Dennis Ritchie and it was for commercial
use. Followed by UNIX other companies like Sun, HP, and IBM created their own
versions.
SUN
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Sun Solaris.
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HP
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HP-UX (Hewlett Packard).
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IBM
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AIX (International Business Machine).
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SCD
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SCO-UNIX (Santacruze).
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BSD
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Free BSD (Berkeley Software
Distribution).
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SG
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IRIX.
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There is a version of UNIX is
called as MINIX (MINI + UNIX = MINIX) which is created by Andrew S. Tanenbaum.
Using C program he created 12000 lines code. Buying MINIX by Linus Benedict
Torvalds who was the student of second year computer science, studied in
University of Helsinki. He created Kernel (source code) and sent to people by
email through “123people.com” which is a social networking site like
“facebook.com”.
Free Software Foundation (FSF).
The Free Software Foundation (FSF) is
a non-profit organization founded by Richard Stallman in 1985 who supporting
free software development. Under FSF he created GNU (not a Linux). GNU is an
operating system. GNU is made of wholly free software and licensed under the
GNU projects GPL. Richard Stallman created Tools, Software, Applications, and
Utilities.
Both
Linus Torvalds and Richard Stallman comes together and created an operating
system called as Linux OS (Free – Free means Freedom). And this Linux which is
able to modify and edit. Using Linux source codes Red Hat created the new
modified OS.
Red Hat Versions
Red Hat 1, Red Hat 2, Red Hat 3, Red
Hat 4, Red Hat 5, Red Hat 6, Red Hat 7, Red Hat 8, Red Hat 9.
Then Red Hat created
its commercial versions.
Red Hat 1, Red Hat 2, Red Hat 3, Red Hat 4, Red Hat 5, Red
Hat 6.
Fedora Core Version 1 to 27 (and 28 is beta version) are the
free versions of Red Hat.
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