bash: cli - Display possible variable completions.

[hoodedvul]

Take into account the main readme for this section. README first.

List possible username completions.
Press Ctrl+x then $

You can type partial word first. followed by Press Ctrl+x then $

$  H
HISTCMD       HISTFILE      HISTSIZE      HOSTNAME
HISTCONTROL   HISTFILESIZE  HOME          HOSTTYPE