I'd like to have on-disk documentation, as there are many times when I must be off the net. I have Ubuntu 16.04 and Octave 4.0.0. When I click the Documentation tab I get "The info file /usr/share/info/octave.info or compressed versions do not exist" and that is well and truly the case. When I run
$ sudo apt install octave-doc
it runs normally but Octave still can't find it (even after re-launching).
When I run
$ find /usr -name "octave.info*"
$ find /opt -name "octave.info*"
I can't find it anywhere.
It's now time for me to ask for help. Is it possible to get the documentation installed, and if so, how?