Unix History Repository

[simgidacav]

Wait, what? How could someone reconstruct single commits? There was no Git back then! The patch program is quite old (1985), but those patches go back to 1972.

[pjc50]

https://en.wikipedia.org/wiki/Source_Code_Control_System dates from 1972. The evolution appears to have been SCCS -> RCS -> CVS -> svn|hg|bzr|git (cambrian explosion) -> git (mass extinction).

[ajross]

SCCS was contemporary with early unix development, so certainly it's technically possible that there are revision histories going back that far. But I'd have to believe that the early commits in this repo are just release checkpoints. It looks like the most recent stuff (1994) dates from early proto-FreeBSD work.

[autoreleasepool]

Here's the first "synthetic commit" from June 20, 1972

https://github.com/dspinellis/unix-history-repo/commit/67174...

[cyphar]

Because Git wasn't the first version control system. Nor was it the first bringover-modify-merge model of distributed source control.

[0xcde4c3db]

The FreeBSD repository also has commit history for BSD in the "csrg" tree [1] (this presumably stands for Computer Systems Research Group, which was the group at UC Berkeley that led BSD development [2]):

[1] https://svnweb.freebsd.org/csrg/

[2] https://en.wikipedia.org/wiki/Computer_Systems_Research_Grou...

[NickBourbaki]

OK, you are going to say that Subversion is old and outdated. But it is not: http://svnvsgit.com/#dvcs-myth

[justinjlynn]

>no access control, full copy of repository on every computer, no exclusive files locks and so on

but those are benefits