Stephen Brennan

stephen brennan wrote a great article [1] on how to write a shell in C. it's a little more simply than DAS' implementation, but it's a fantastic read. [1] https://brennan.io/2015/01/16/write-a-shell-in-c/

I've always preferred Stephen Brennan's approach mentioned here: https://brennan.io/2020/05/08/meson/ This is the approach I take with my C and C++ projects, although I've swapped meson out for CMake. I still have my CMake projects generate pkg-config files as well so that I don't force CMake on any consuming projects (just because I suffered with CMake doesn't mean you have to, although you can as well :))

I decided to read ep1[0] too and I saw a picture "use all the memory". I don't know if it's funnier that I checked if you have an "alt" HTML tag or that you actually wrote the text from the picture. People with alt tags are MVPs. :) [0] - https://brennan.io/2016/10/13/kernel-dev-ep1/

Hope this can help [1]. Otherwise, if you just want an API wrapped up with python [2]. [1] http://brennan.io/2015/01/16/write-a-shell-in-c/ [2] http://www.ibm.com/developerworks/aix/library/au-pythocli/

It's very educational to dig into stuff that everyone takes for granted or even try implement your own version that does similar things (at a smaller scale and with less features, performance and security of course, just for educational purposes, not to serve as a real replacement). E.g. writing your own shell sounds hard but you can do it in an hour (of course it'd be very bare compared to even ash), I once did it during a very casual C class while trying to impress the teacher. He even joked it was self hosting when he has seen the end result (as in - I didn't need other shells anymore and could use vim and gcc from my shell so I could use my shell to work on my shell). I wanted to put that into tutorial at some point but there already exists one[0] (that blog seems quite tinker-y actually, it has implementing own Linux sys call too, which is also surprisingly easy to do and I did it for a class at one point too[1]). Going knee deep into this stuff also completely dispels the magic that language and system runtimes, filesystems, file formats, linkers, shells, standard commands (e.g. ls, I had to reimplement it once as a homework) or whatever have, or even better - it's still magic to most people and you're the wizard now! It's also very accomplishing to do something so unique in an hour or two (although to me due to my C and C++ bias at some point making a pastebin clone in an hour in PHP or Python became an unique experience). Even JIT (which sounds scary due to V8,…