Re: Bash cannot kill itself?

[Andreas Schwab]

"Clark J. Wang" <dearvoid@gmail.com> writes:

> I have a bash script like this:
>
> #!/bin/bash
>
> trap 'echo killed by SIGALRM; exit 1' ALRM
>
> function wait_kill()
> {
>     sleep 5
>     kill -ALRM $$
> }
>
> wait_kill &
>
> sleep 3600
>
> ### END OF THE SCRIPT ###
>
> It does not work as I expected. The running script was not terminated after
> 5 seconds. So what's wrong here?

The shell is waiting for foreground process (sleep) to finish.  During
this time no other process will be started by the shell.

Andreas.

-- 
Andreas Schwab, schwab@linux-m68k.org
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