[expert] A script to discover IP?

[Tim Howell]

Hi,

Just wondering if anyone more familiar with shell programming than I had
any ideas how to write a script that would take a client's IP address (as
assigned by a DHCP server) and email to a user?  I have recently
configured my system as a DHCP client, and would like such a script, to
avoid having to log on to my firewall machine and run ifconfig.  Any
ideas?

TIA

Tim