Get Hardware (Mac) Address through Applescript

There are several ways of doing it. Querying System Profiler is one of them, or you can use any of a number of shell commands, such as:

<pre class=command>do shell script "ipconfig getifaddr en0"</pre>

Note that this command will fail if the interface isn't configured/up. You could use:

<pre class=command>do shell script "ifconfig en0"</pre> and parse the results for the 'ether' line.

You don't need to know shell scripting. The AppleScript I posted will do what you want.

Maybe you want something more explicit?

<pre class=command>set etherAddr to do shell script "ipconfig getifaddr en0"
display dialog etherAddr</pre>

>get if addr en0 failed, (os/kern) failure

Then you don't have an active interface. You can't use ipconfig to query an interface that isn't up.

You need to decide how you want to deal with this - you won't know in advance what interfaces the user may have active. For this reason, relying on the MAC address is inherently problematic. You might be better off using the system's serial number (which is less likely to change anyway):

<pre class=command>set serialNum to do shell script "system_profiler SPHardwareDataType| awk -F: '/Serial/ {print $2}'"</pre>

You're nearly there.

set theETH to primary Ethernet address of (get system info)