I got into unix after CVS had pretty much displaced SCCS and RCS, but the older per-file version control systems persisted long enough that I had a few close en

I got into unix after CVS had pretty much displaced SCCS and RCS, but the older per-file version control systems persisted long enough that I had a few close encounters with them. When I took over Cambridge University’s DNS, its code and configuration was still in SCCS, because that was what shipped with SunOS in 1991ish. I converted the SCCS archive via RCS and CVS to git – https://dotat.at/@/2014-11-27-uplift-from-sccs-to-git.html https://dotat.at/@/2014-11-27-uplift-from-sccs-to-git.html – which was a fairly entertaining exercise. (Sadly the links in that blog post are mostly broken.) I even used those conversion scripts more than once! https://dotat.at/@/2016-07-19-uplift-from-sccs-to-git-again.html https://dotat.at/@/2016-07-19-uplift-from-sccs-to-git-again.... (That repository ended up with at least three distinct root commits, one for the main DNS history, one for the Ansible setup that started with DHCP and later grew to handle DNS too, and later the separate vanity domain DNS setup.)