The Sixth Edition of Unix was released by Bell Laboratories in May 1975.
It was designed to run on the PDP-11s with 18-bit addressing such as the PDP-11/40, 11/45 and 11/70. The kernel's image size was around 29 Kbytes. This edition introduced the `Portable C Library' written by Mike Lesk, which would evolve into the Standard I/O library.
The files here come from the tarballs in http://www.tuhs.org/Archive/Distributions/Research/Dennis_v6/ and were supplied by Dennis Ritchie.
For more information about Sixth Edition Unix, see The Unix Time-sharing System: A Retrospective by Dennis Ritchie.
File | Size | Date |
---|---|---|
etc | dir | |
usr | dir |