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./nsys.webp | ! Unix v4 was an operating system for the DEC PDP-11 computer. It was developed by Bell Labs. | 2 |
import DocCardList from '@theme/DocCardList';
! Unix v4
! Unix v4 was an operating system for the DEC PDP-11 computer. It was developed by Bell Labs. Sadly, we do not have a complete copy of Unix v4, but we do have a copy of a kernel that is from between v3 and v4. We can use that kernel with v5 userland. It can be used on SIMH PDP-11 emulator.
Manuals
Since the kernel is from between v3 and v4, and we use the userland of v5, here are the manuals of all of them:
- ! Unix Programmer's Manual, 3rd Edition
- ! Unix Programmer's Manual, 4th Edition
- ! Unix Programmer's Manual, 5th Edition
You may also be interested in the PDP-11 manuals. It was the computer on which ! Unix v3, v4 as well as v5 was supposed to run. You can download them from Bitsavers:
In particular, you may be interested in these:
Related Pages
- VirtualHub Screenshots
- Wikipedia
- Computer History Wiki ! Unix v3 page
- Computer History Wiki ! Unix v4 page
- Computer History Wiki ! Unix v5 page
- Computer History Wiki PDP-11 page
Credits
- ! Unix v3 and v4 manuals were taken from the page of the GitHub user "dspinellis".
- The rest of the manuals were taken from The Unix Heritage Society (TUHS) and Bitsavers.