Sort of? The github says “This repository houses a reconstructed version of UNIX as it existed around 1972, rather than an original 1st Edition UNIX image.”
There are no PiDP-11 console lights. I guess the below errors are OK, because you can logon as ‘root’.
Connecting to host localhost ...
Required input control "LOAD_ADDR" not found
boot.ini-31> set realcons connect
Unit not attachable
use 'root' for login
see github.com/jserv/unix-v1 for documentation
there is no shutdown or sync in unix-v1, just reboot the PDP-11
login: Restoration github.
Unix 1 commands. As you can see, I typed ls /bin, I couldn’t scroll back to see everything. So I zoomed out till I could.
No cd?
I asked Grok how to cd (change directory) in old unix. And it replied… cd. I then added “cd doesn’t exist in unix v1”. and it replied…
cd doesn't exist in unix v1
Answer
If you're referring to an extremely early version of Unix like Unix Version 1 from the early 1970s, then indeed, the cd command as we know it today did not exist.
It continued...
Unix Version 1 did not have a cd command. Instead, you would use the chdir system call within a program.
It's worth noting that the cd command was introduced in later versions of Unix, becoming a standard part of the shell environment in Unix Version 7, which was released in 1979.