PAUSE
BOX
ILLUSTRATION
GO
The original UNIX development and major UNIX updates were done
at Bell Laboratories. The first version of UNIX to be publicly
released was Version 6, V6, in 1975.
BELL
|
V6
|
After the release of Version 6, work began on developing
UNIX programming tools, the product referred to as
The Programmer's Workbench or PWB.
BELL
|
V6
|
|-----------------
| |
| PWB
| |
In 1978, UNIX Version 7, V7, was released, an event signifying
AT&T's major commitment to UNIX.
BELL
|
V6
|
|-----------------
| |
| PWB
V7 |
| |
Shortly after the release of UNIX V7, a major effort in UNIX
development was undertaken at the University of California at
Berkeley. Almost simultaneously, work on the V32 update of
Version 7 was being done at Bell Labs.
BELL
|
V6
|
|-----------------
| |
| PWB
V7 |
BERKELEY | |
-----------------| |
| | | |
| V32 | |
| | | |
In 1979, the Berkeley System Distribution (4.1 BSD) was released.
This release was superior to Version 7 in file handling, record
locking, virtual memory usage, and included several new Berkeley
utilities.
BELL
|
V6
|
|-----------------
| |
| PWB
V7 |
BERKELEY | |
-----------------| |
| | | |
| V32 | |
| | | |
4.1BSD | | |
| |
In 1982, System III was
released which combined
the PWB and V32 tools,
and contained many features
superior to those in V7.
BELL
|
V6
|
|-----------------
| |
| PWB
V7 |
BERKELEY | |
-----------------| |
| | | |
| V32 | |
| | | |
4.1BSD | | |
| |---System III-----------
| |
| |
In early 1983, AT&T
Released System V and for
the first time was offering
support to their UNIX
product. AT&T's System V
was made available on
various computers.
BELL
|
V6
|
|-----------------
| |
| PWB
V7 |
BERKELEY | |
-----------------| |
| | | |
| V32 | |
| | | |
4.1BSD | | |
| |---System III-----------
| |
| |
| System V
| |
Later in 1983, at
UC Berkeley, 4.2 BSD was
released with significant
communication enhancements
and with several utilities
which made it stand apart
from other UNIX releases.
BELL
|
V6
|
|-----------------
| |
| PWB
V7 |
BERKELEY | |
-----------------| |
| | | |
| V32 | |
| | | |
4.1BSD | | |
| |---System III-----------
| |
| |
| System V
4.2BSD |
| |