Is it possible to make completion with Tab like in bash?
Currently I use Esc twice, can this be changed to a tab?
I'm not sure which version of System V you're using, nor which version of
ksh, but it's possible to change the completion key to Tab with ksh93 (not with ksh88, though, I believe).
Depending on age, these in your
~/.profile may do it:
set -o emacs bind bind "^I=complete"
See this thread for more info.
The question is solved: with ksh93 is possible to change completion key, but with ksh88 it's not possible