So, I have this script that makes a call to ifconfig to pull the interface information and report it. When I log on to the machine the script works just fine. But, if I'm on a remote machine and I make a call like this.

ssh user@server ./script.bash

What, exactly, does it say?

It's probably just not in your PATH. See 'whereis ifconfig' to find out where it's hiding on that system.

 
./sysinfo.bash: line 30: ifconfig: command not found

Did you check the full path on the remote system, though? It might be a different full path on your remote system than your local one. See, mine is /sbin/ifconfig. /usr/ seems a bit odd to me.

Yes, I did. I modified the script on the remote machine to point to /usr/sbin/ifconfig which is where it's located. I don't have whereis so I used which. Which is pretty much the same. It's Solaris 10 on a sparc Netra-T5220.

Well then, check for typos or special characters like carriage returns in the file.

Older Solaris releases used to provide two different ifconfig binaries, one in /sbin and the other in /usr/sbin, with a slightly different behavior regarding the name service resolution order.
Recent releases have /usr/sbin/ifconfig being just a symbolic link to /sbin/ifconfig.