Re: [BUG] Bash not reacting to Ctrl-C

[Oleg Nesterov]

On 02/09, Bob Proulx wrote:
>
> Oleg Nesterov wrote:
> > Bob Proulx wrote:
> > > Is the behavior you observe any different for this case?
> > >   $ bash -c 'while true; do /bin/true || exit 1; done'
> > > Or different for this case?
> > >   $ bash -e -c 'while true; do /bin/true; done'
> >
> > The same.
>
> I expected that to behave differently for you because I expected that
> the issue was that /bin/true was being delivered the signal but the
> exit status of /bin/true is being ignored in your test case.  In your
> test case if /bin/true caught the SIGINT then I expect the loop to
> continue.  Since you were saying that it was continuing then that is
> what I was expecting was happening.

Well, it is too late for me ;) perhaps I misunderstood your point.
But I think this doesn't matter, see below.

> > I do not know what "-e" does (and I can't find it in man), but how
> > this can make a difference?
>
> The documentation says this about -e:
>
> [... snip ...]

Aha, thanks a lot.

> Using -e would cause the shell to exit if /bin/true returned a
> non-zero exit status.  /bin/true would exit non-zero if it caught a
> SIGINT signal.

If /bin/true gets SIGINT - everything is fine. With this particular
test-case the problem is: ^C race race with true/false/whatever
doing exit(any_exit_code). In this case the shell "ignores" the
signal.

Oleg.