You will most often use Bash functions to make your shell life easier; instead of typing out complex command pipelines, ...
rsc.io/unix holds programs for running old Unix programs on modern computers. pdp11 is a PDP-11 simulator. v6unix is a Research Unix Sixth Edition (V6) simulator. It is a port of the V6 kernel logic ...
Redstart (named after the bird) is a lightweight Lisp interpreter written in C++ with a focus on shell scripting. It lets you combine the expressive power of Lisp with the practicality of the Unix ...