>       In the timex program in /lymon/homes/cs494/labs/Sh/programs , nothing 
>seems to be happening (when running of kenner) as follows
>
>Wael on kenner> pwd 
>/lymon/homes/cs494/labs/Sh/programs 
>Wael on kenner> sh 
>$./timex sleep 100 

This waits 60 seconds and then kills the sleep process.  When it's
done, the sleep and timex are gone.  If you do a <CNTL-Z> and bg, you
should see that there are two sleeps running -- one for 100 seconds and
one for 60.

>$ ps
>   PID TTY TIME CMD
> 19745 pts/6 0:00 sh
> 18675 pts/6 0:02 tcsh 
>$ sleep 100 & 
>19764 
>$ ps
>   PID TTY TIME CMD
> 19745 pts/6 0:00 sh
> 18675 pts/6 0:02 tcsh
> 19764 pts/6 0:00 sleep 
>
>So what exactly is happening in the first example.
>
>On a related note, why use kill to test for existance and then kill it? 
>why don't we just kill the process anyway (and capture the result in 
>/dev/null) even if it doesn't exist?

Sure -- that's fine, I'm just making you do more work for the fun
of it.