UNIX for Dummies Questions & Answers

I'm using ksh on an AIX system.

I know that env will list the values of environment variables that have been set. How do I find out about other environment variables?

Here's what happened:

I recently took a new job at a competitor. One thing that attracted me to the job, and vice versa, is that the primary business software is from the same vendor, and running on the same type of system.

My problem was, a little shortcut I got used to was missing. At a shell command prompt, hitting esc then k would return the prior command to the command line, editable with vi commands. (FYI: Hit k multiple times to scroll thru recent commands. Hit j to scroll the other way.)

This was missing for days, until I added the following line to my .profile:

EDITOR=vi ; export EDITOR

Simple enough, but I got the idea to add that line out of the blue. I really don't know why I thought to try it, but it REALLY got me wondering if there were any other useful commands and environment variables that I'm unaware of.

Thanks.

Sorry Dave
I happen to have been disturbed by a support by phone and got the lot mixed:
someone wanted the equivalent of Esc-Esc under HPUX for AIX (Esc [\]) the point is at the moment (a bit stressed by work) I cant figure out what was the purpose of Esc+Esc...
I will try when a little time to see what you could be missing

ok name completion...

As for your question, I went and checked a few aix (from 4.3 to 5.3) and there seem to be no "standards" some have EDITOR in .profile some others have VISUAL=vi...
but those who have nothing have added ENV=$HOME/.kshrc and in .kshrc a line such as set -o vi