Am Sun, 19 Mar 2017 10:17:02 +0100 schrieb Matthias Hanft <m...@hanft.de>:
> Kai Krakow wrote: > > > > After ctrl+c'ing out of programs like tailf, SSH password prompts, > > in the middle of a shell scripts, the shell echo is not restored > > Not here, but something similar: Immediately after ctrl+c'ing, no > shell prompt is displayed (in fact, *nothing* is displayed) - but > it's just the display; I can enter a shell command (with echo, too) > which will be executed properly. Or just press the RETURN key on the > empty line to get the shell prompt again. > > This happens just on a single of my Gentoo systems (and not always, > but very often). > > Any idea? Yes, this can sneak upon you if you ctrl+c a program with child processes, and part of the teardown is that a child displays a line after control has already been returned to the shell. What happens now is: Your shell displays the prompt, the child process echos a carriage return and echos text, overwriting your prompt, and putting a newline, child now also exits. If your prompt was long enough, you may still see the rest of it. You end up with a sole blinking cursor on an empty line. Hitting enter produces a new shell prompt. There's no way to work around it except by maybe putting a sleep inside the PS1 variable. But I'm sure you don't want that. ;-) Tho, thinking about this, your case may have the same underlying bug in common: delayed termination of child processes. -- Regards, Kai Replies to list-only preferred.
