Re: Errors on Solaris

[Ben Pfaff]

John Darrington <address@hidden> writes:

> On Thu, May 29, 2008 at 09:08:55AM -0700, Ben Pfaff wrote:
>      John Darrington <address@hidden> writes:
>      
>      > The only two test failures now should be two which use $PPID which is
>      > a bash thing and non-portable.
>      
>      We could do something like
>              if test -z "$PPID"; then
>                  exit 77             # Make automake ignore this test
>              fi
>      to cater to systems that don't have it.
>
> That would be one option.
>      
>      But it's not a bashism.  This is what SUSv3 says:
>
> Well it's not recognised by the /bin/sh which ships with Solaris9.

Solaris /bin/sh is not a POSIX shell, alas.

Solaris does come with a POSIX shell, but it's somewhere like
/usr/ucb/bin.

> One construct which seems to work both on solaris and on GNU/Linux is
> "ps -o ppid -p $$ | tail -1"  but I don't know what BSD and all the
> other OSes might think of that.

If it comes down to that, it would be much better, in my opinion,
to compile a small C program to do this, e.g.

#include <signal.h>

int main(void) 
{
    kill(getppid(), SIGTERM);
}
-- 
"Unix... is not so much a product
 as it is a painstakingly compiled oral history
 of the hacker subculture."
--Neal Stephenson