It would be nice to have similar functionality to the webparser, but with CLI tools... a simple plugin that shells the given command, captures the output, and applies a regex to it to parse out variables would be amazing to add features like itunes control via itch, or displaying arp tables, or many other things... if there were three options, one to run the command and be done (a custom bang sort of thing), one to run the command periodically (like webparser), and one to run, buffer the output, and present the current output of an ongoing process periodically, I would be in heaven.

Well if all you are trying to do is send commands to the Command Prompt (cmd.exe) NirCmd can do that easily. Read my tutorial in the forum (http://rainmeter.net/forum/viewtopic.php?f=15&t=4561) under normal command prompt entry.