Comment by leoc
19 hours ago
xv6 the MIT 'spiritual port' (so to speak) of Version 6 Unix probably deserves to be mentioned there as well, as while it's not actually a historic Bell Labs Unix it will better meet some people's needs. https://pdos.csail.mit.edu/6.828/2012/xv6.html https://pdos.csail.mit.edu/6.828/2025/xv6.html
Good mention! If one wants to study Unix in an academic sense then xv6 is a great starting point. IIRC, many course studies start with xv6 and gradually adding new capabilities to it.
Videos that go through the xv6 source code: https://www.youtube.com/playlist?list=PLbtzT1TYeoMhTPzyTZboW...