Shake command window (SCW) is a Maya script editor like command window with which you can write and execute a script immediately. It also lets you write a plug-in code in C++ and SCW does everything (save the source to file, compile/link, load, execute, unload, delete files) for you. Shake's console message is redirected to the UI.

See my blog for usage and older versions.
http://koichitamura.blogspot.com/2008/06/shake-command-window-doc.html
and some more screen caps here
http://koichitamura.blogspot.com/2008/06/added-background-gcc-compile.html

NOTE:

Currently it only works on Mac OSX 10.5. Maybe it will work on 10.3 and 10.4 if you install the latest wxPython and Python2.5, but I don't have test environment so cannot say for sure. I will try to modify the code so that it will work on 10.4 or earlier.

To open an window, press CommandWin button in the Other tab. The button is also used to execute a script/code.