Korn shell script Question

[Dak Ghatikachalam]

On 2/2/07, Kris Maglione <bsdaemon at comcast.net> wrote:
>
> On Fri, Feb 02, 2007 at 11:10:02AM -0500, Dak Ghatikachalam wrote:
> >{ while cat /tmp/availspace.$$; do false; done } |&
> >exec 5<&p
> >cat  /tmp/reprocesses.$$|awk '/DATAFILE/ { print $0 }'|tr -d ' '|
> >while read file_b
> >do
> >        read -u5 file_a
> >        echo $file_b $file_a
> >done >/tmp/reprocessrecset.$$
> >
> >exec 5<&-
> >
> >this what you meant ?
>
> It doesn't matter where you put the redirects, so long as they're in
> order and you wind up closing the coprocess's standard output so that it
> exits. It's more a matter of style and taste than anything. Here are
> some more options if you're interested:
>
> As long as you haven't started any other background jobs, this would
> work in place of the final 'exec 5<&-':
> kill -INT %+
>
> Or, after you start the coprocess, you can store its PID, and kill that
> later:
> copid=$!
> ...
> kill -INT $copid
>
> Again, it's a matter of style and taste. If it's not to be part of a
> long running script, though, don't even worry about it.
>

Kris,

That is great , Thanks  a lot for your  input and insight.

It just amazes me how powerful a korn shell script in general  any Unix
shell, process handling  can be.

Thanks
Dak