I would like a bash script for Debian Linux that executes a simple
if/then relationship based on the machine's IP address, such as:

If the machine's ip address is 192.168.1.200, then run "program
command line, option a"

There are 7-10 machines/ip addresses

Would something like this do the job?

ifconfig lists interfaces set up on the machine, along with their ip
addresses. Here I'm just looping through all interfaces and checking
what ip addresses are assigned.

#!/bin/sh
for foo in $(/sbin/ifconfig | grep "inet addr:" | sed -e 's/addr://g'
| awk '{print $2}'); do
        if [[ $foo = "127.0.0.1" ]];
        then
                //enter command to run
        elif [[ $foo = "127.0.0.2" ]];
        then
                //enter another command
        fi
done

Argh, formatting - the for foo in [...] | awk... bit should all be on
one line, next line should begin if [[$foo ...

This looks promising - I'll give  it a spin on Monday and let you know