This article is from the 3b1 computers FAQ, by John B. Bunch with numerous contributions by others.
The operating system is based on UNIX System V Release 2, with extensions from BSD 4.1, BSD 4.2, System V Release 3 and Convergent Technologies. The most recent version is 3.51, with a 3.51m FIXDISK (2.0) available. The FIXDISK was available from AT&T directly, but is now only available on the OSU Archives as FIXDISK2.0+IN.
 
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