Remembering days when I was a sysadmin, vim or even old-school vi was the default editor on literally every POSIX/UNIX system, and I had to deal with quite a va

Remembering days when I was a sysadmin, vim or even old-school vi was the default editor on literally every POSIX/UNIX system, and I had to deal with quite a variety of them - BSD family, Solaris (still Sun), AIX - some of them still not connected to the internet! Having advanced vi skills appeared handy in my situation