Turn me on
--#--
A Unix computer's <i>ppp</i> connection is usually established by a script. 
In the RedHat Linux distribution, a script called <i>ifup-ppp</i> runs 
whenever the <i>ppp</i> interface is activated, whether through Linuxconf 
or UserNet or some other tool.<br>
<br>
We can take advantage of that and write a "wrapper" around <i>ifup-ppp</i> 
that calls our new robot script at the same time. You could 
edit <i>ifup-ppp</i> to make the call to the robot, but that's not 
really necessary. Simply rename <i>ifup-ppp</i> something else, like 
<i>ifupppp,</i> and write a <i>new ifup-ppp</i> that calls it: <br>
<br>
<code>
#!/bin/sh
/etc/sysconfig/network-scripts/ifupppp $1
</code>
<br>
The <i>$1</i> at the end of the business line simply passes on to the 
original <i>ifup-ppp</i> the parameter passed to your wrapper script. 
Then, on the next line, add a call to your robot:<br>
<br>
<code>
#!/bin/sh
/etc/sysconfig/network-scripts/ifupppp $1
/home/webmaster/bin/domain_robot
</code>
<br>
And we are done! The next time you dial into your ISP account, your 
robot will spring into action, notifying TSX, DSH or whoever (and all 
the world, really) that your killer Web site is on the air!