A UNIX System Timeline


The following timeline summarizes the development of UNIX from its beginning to 2006. For an incredibly detailed timeline of releases of different UNIX variants, go to http://www.levenez.com/unix/.

Year

UNIX Variant or Standard

Comments

1969

UNICS (later called UNIX)

A new operating system invented by Ken Thompson and Dennis Ritchie for the PDP-7

1973

Fourth Edition

Written in C programming language; widely used inside Bell Laboratories

1975

Sixth Edition

First version widely available outside of Bell Labs; more than 600 machines ran it

1978

3BSD

Virtual memory

1979

Seventh Edition

Included the Bourne shell, UUCP, and C; the direct ancestor or modern UNIX

1980

Xenix

Introduced by Microsoft

1980

4BSD

Introduced by UC Berkeley

1982

System III

First public release outside of Bell Labs

1983

System V Release 1

First supported release

1983

4.1BSD

UC Berkeley release with performance enhancements

1984

4.2BSD

UC Berkeley release with many networking capabilities

1984

System V Release 2

Protection and locking of files, enhanced system administration, and job control features added

1986

HP-UX

First version of HP-UX released for HP Precision Architecture

1986

AIX Version 1

First version of IBM’s proprietary version of UNIX, based on SVR3

1987

System V Release 3

STREAMS, RFS, TLI added

1987

4.3BSD

Minor enhancements to 4.2BSD

1988

POSIX

POSIX.1 published

1989

System V Release 4

Unified System V, BSD, and Xenix

1990

XPG3

X/Open specification set

1990

OSF/1

Open Software Foundation release designed to compete with SVR4

1991

386BSD

Based on BSD for Intel 80386

1991

Linux 0.01

Linus Torvalds started development of Linux

1992

SVR4.2

USL-developed version of SVR4 for the desktop

1992

HP-UX 9.0

Supported workstations, including a GUI

1993

Solaris 2.3

POSIX compliant

1993

4.4BSD

Final Berkeley release

1993

FreeBSD 1.0

Initial release based on 4.3BSD and 386BSD

1993

SVR4.2MP

Last version of UNIX developed by USL

1994

Linux 1.0

First version of Linux not considered a “beta”

1994

NetBSD 1.0

First multiplatform release

1994

Solaris 2.4

Motif supported

1994

AIX4

Introduced CDE support

1994

FreeBSD 2.0

Based on 4.4BSD-Lite to allow free distribution

1995

UNIX 95

X/Open mark for systems registered under the Single UNIX Specification

1995

Solaris 2.5

CDE supported

1995

HP-UX 10.0

Conformed to the Single UNIX Specification and the Common Desktop Environment (CDE)

1996

Linux 2.0

Performance improvements and networking software added

1996

OpenBSD 1.2

Initial release with strong support of security

1997

Solaris 2.6

UNIX 95 compliant, JAVA supported

1997

Single UNIX Specification, Version 2

Open Group specification set

1997

System V Release 5

Enhanced SV kernel, including 64-bit support, increased reliability, and performance enhancements

1997

UnixWare 7

SCO UNIX based on SVR5 kernel

1997

HP-UX 11.0

64-bit operating system

1997

AIX 4.3

Support for 64-bit architectures, registered with UNIX 98 mark

1998

UNIX 98

Open Group mark for systems registered under the Single UNIX Specification, Version 2

1998

FreeBSD 3.0

Kernel changes and security fixes

1998

Solaris 7

Support for 64-bit applications, free for noncommercial users

1999

Linux 2.2

Device drivers added

1999

Darwin

Apple developed UNIX-like OS, basis for Mac OS X

2000

Solaris 8

Performance and application support enhancements

2000

HP-UX 11i

Introduces operating environments

2000

FreeBSD 4.0

Networking and security enhancements

2001

Linux 2.4

Enhanced device support, scalability enhancements

2001

AIX 5L

Introduced affinity for Linux

2001

Mac OS X 10.0 “Cheetah”

First Mac OS release based on Darwin. Incomplete and slow, but with basic OS features, device support, and software development environment

2001

Mac OS X 10.1 “Puma”

More complete than Cheetah, with performance enhancements and support for additional device drivers

2002

Solaris 9

Manageability, security, and performance enhancements

2002

Mac OS X 10.2 “Jaguar”

First solid release of Mac OS X

2003

Linux 2.6

Scalability for operation on embedded systems to large servers, human interface, networking, and security enhancements

2003

Mac OS X 10.3 “Panther”

Performance enhancements, an extensive update to the user interface, and greater interoperability with MS Windows

2003

Single UNIX Specification, Version 3

Developed by the Austin Group

2003

FreeBSD 5.0

Improved SMP support, TrustedBSD security features

2004

Solaris 10

Advanced security, performance, and availability enhancements

2004

NetBSD 2.0

Support for SMP

2005

OpenServer 6

Improved SMP support and support for extremely large files

2005

Mac X 10.4 “Tiger”

New features include Spotlight, a fast content and metadata-based file search tool, and support for 64-bit platforms and Intel x86 platforms

2005

Net BSD 3.0

Suppose Xen Virtual Machine Monitor




UNIX. The Complete Reference
UNIX: The Complete Reference, Second Edition (Complete Reference Series)
ISBN: 0072263369
EAN: 2147483647
Year: 2006
Pages: 316

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