bash - enable single tab hit once auto completion

bash - enable single tab hit once auto completion

If it's the former I have no clue, though ctrl-R kind of does that. If the latter, you can create a file called .inputrc in your home directory with the following lines:

# vi ~/.inputrc
### tab auto-completion
set show-all-if-ambiguous on
set show-all-if-unmodified on

### if you don't want case-sensitivity
set completion-ignore-case on

### bash history completion to complete what's already on the line
"\e[A": history-search-backward
"\e[B": history-search-forward

Note: .inputrc will get read whenever you start a new bash process.

Note: After you modify ~/.inputrc, restart your shell or use Ctrl+X, Ctrl+R to tell it to re-read ~/.inputrc.