UTS is a discontinued implementation of the UNIX operating system for IBM mainframe (and compatible) computers. Amdahl created the first versions of UTS, and released it in May 1981, with UTS Global acquiring rights to the product in 2002. UTS Global has since gone out of business.
|Developer||Amdahl Corporation / UTS Global|
|OS family||Unix SVR4|
|Initial release||May 1981|
|Latest release||UTS 4.5|
|Platforms||IBM mainframes (and compatible)|
|Default user interface||Command-line interface|
The UTS project had its origins in work started at Princeton University in 1975 to port UNIX to the IBM VM/370 system. Team members there were Tom Lyon, Joseph Skudlarek, Peter Eichenberger, and Eric Schmidt. Tom Lyon joined Amdahl in 1978, and by 1979 there was a full Version 6 Unix system on the Amdahl 470 being used internally for design automation engineering. In late 1979 this was updated to the more commonly ported Version 7.
The commercial versions of UTS were based on UNIX System III and UNIX System V. In 1986, Amdahl announced the first version to run natively on IBM/370-compatible hardware, UTS/580 for its Amdahl 580 series of machines; previous Unix ports always ran as "guests" under the IBM VM hypervisor. Version 4.5 was based on Unix System V, Release 4 (SVR4).
- Poulsen, Lars (2001), IBM 360/370/3090/390
- Fiedler, Ryan (October 1983). "The Unix Tutorial / Part 3: Unix in the Microcomputer Marketplace". BYTE. p. 132. Retrieved 30 January 2015.
- Gallant, John (18 February 1985). "Users: new life for VM". Computerworld. p. 11.
- Beeler, Jeffry (27 January 1986). "Amdahl broadens Unix-based UTS line". Computerworld.
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