[PLUG] Terminal does not echo typed characters

[Rich Shepard]

Now and then when I exit from a root session in a terminal key strokes are
not displayed on the command line. Commands can be entered and acted upon,
but the cursor remains at the prompt. I've not found a command to restore
normal behavior, only killing that process and invoking a new terminal has
worked for me.

Is there a command that restores keyboard character display on a terminal?

Rich