On Fri, 12 Apr 2002, webmaster@datazap.net wrote:

> Could sometime me if there is a way that I can email everyone in
> master.passwd. I am going to be shutdown the server for a while and I
> would like to let everyone know.

Have a look at google groups -- this has been asked and answered numerous
times.

Here is an idea (where message contains your message) to send UIDs
greater than 100:

 awk -F: '{if ($3 > 100) print $1 }' < /etc/passwd | \
 while read user ; do mail -s "test subject" $user < message ; done


   Jeremy C. Reed
   http://www.reedmedia.net/