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Loom Communications - The AT&T 3B2 Computer
"The AT&T 3B2 was a line of UNIX desktops and servers produced jointly by Western Electric and AT&T starting in 1984, shortly after the Bell System breakup allowed them into the computer market." Software, docs and emulators.
to 3b2 att emulation retrocomputing software unix ... on 05 May
M68k Application Binary Interface (ABI) - M68k LLVM
Clear description, including the differences between the GCC and SysV variants.
research!rsc: Running the “Reflections on Trusting Trust” Compiler
With analysis of the surprisingly short source code.
to backdoor bell-labs compiler history retrocomputing security unix ... on 26 October 2023
terrycojones/daudin: A Python command-line shell
"daudin is a UNIX command-line shell based on Python." It's a bit brute-force (if something parses as Python, it gets evaluated as an expression, else it's passed to the shell) but looks like it should work pretty well.
gitstatus/listdir.md at master · romkatv/gitstatus
Speeding up directory listing. This will, however, have horrible performance on NFS... so it's not really true that there's nothing much left to optimise!
to optimisation unix ... on 29 June 2020
The Early History of the "more" Command
to history its retrocomputing unix ... on 11 June 2018
MCS 494, UNIX Security Holes, Fall 2004
Dan Bernstein's Unix security module. This is a bit dated now, but the material is interesting, and the assessment materials have some nice ideas.
"Es is an extensible shell. The language was derived from the Plan 9 shell, rc, and was influenced by functional programming languages, such as Scheme, and the Tcl embeddable programming language." Meets some of the design criteria I'm interested in, although overall I don't find the design that compelling.
to es language-design shell unix ... on 06 April 2017
DDS's shell allowing the construction of arbitrary graphs of pipes. I like the examples, which range from "Directory listing" to "Nuclear magnetic resonance processing".
"This directory contains some scripts of the lecture Operating Systems at the Berufsakademie Stuttgart." (Or, as we'd say, some lectures for the module &c.) Interesting in that it uses Unix v6 and the Lions book.
to operating-systems retrocomputing teaching unix ... on 24 December 2016
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tasty by Adam Sampson.