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Date: Tue, 09 Jun 2009 21:04:19 -0500
From: Martin McCormick <martin@dc.cis.okstate.edu>
Subject: Re: Control-Z the Sleep Signal 
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Dan Nelson writes:
> ^Z sends a SIGTSTP, which can be caught (or ignored, in your case).
> 
>     18    SIGTSTP      stop process         stop signal generated from
>                                             keyboard
> > According to
> >
> >       % stty -g
> >       ... status=14:stop=13:susp=1a:time=0:werase=17: ...
>                               ^^^^^^^
> >      17    SIGSTOP      stop process         stop (cannot be caught or
> >                                              ignored)
> >
> > And I think that 17 (decimal) is refered to as 1a (hexadecimal)
> > in the previous stty command.
> 
> 1a hex just refers to the control code itself (^Z), and doesn't indicate
> which signal is sent.

	Thanks to all. In this case, I made SIGTSTP have the
same effect in the program that CTRL-C does (SIGINT) so now
either signal makes the application remove the lock and quit
gracefully.

	Again, many thanks to everybody.

Martin McCormick