Path: utzoo!attcan!uunet!mcsun!hp4nl!kunivv1!atcmpe!ronald
From: ronald@atcmp.nl (Ronald Pikkert)
Newsgroups: comp.unix.questions
Subject: Re: SEX!  or, how do I mail to a lot of unix users?
Message-ID: <608@atcmpe.atcmp.nl>
Date: 1 Jun 90 20:28:50 GMT
References: <900531083002.30e0d06c@Csa2.LBL.Gov>
Organization: AT Computing, Nijmegen, The Netherlands
Lines: 25

From article <900531083002.30e0d06c@Csa2.LBL.Gov>, by thermal%solgel.hepnet@CSA2.LBL.GOV:
> I would like to be able to send a mail message to all the users on
                                                    ^^^
> a unix machine.  


Mailing to all user on your system, and not only to those currently
on the system, could be done with a script like:

mail `awk 'BEGIN {FS=":"}
{print $1}
' < /etc/passwd` < tekstfile

It takes ALL the names from the passwordfile and mailes each user.

Take a textbook and study commandsubstitution if you're interested
in really taking advantage of the capabilities of the (bourne)shell.
The commandsubstitution mechanism is basicaly used if the output of 
a command is needed as an argument for another command.

-
Ronald Pikkert                 E-mail: ronald@atcmp.nl
@ AT Computing b.v.            Tel:    080 - 566880
Toernooiveld
6525 ED  Nijmegen