We have our hands on the bash launcher used by Valve's Steam client for Mac OS X that was recently announced -- along with the Source Engine for OS X -- and is currently in closed beta. While such scripts are usually insignificant, there is something interesting within it and that is explicit support for Linux.

In early March the news broke that Steam and the Source Engine were coming to Mac OS X. Not only was Valve bringing over its flagship game engine and their very popular game delivery platform, but also they are bringing many of their popular games over to Apple's Mac OS X. This is using an OpenGL renderer for the Source Engine (compared to the past where the engine was limited to Microsoft's DirectX) and going forward they plan to provide Mac OS X versions at the same time as their Windows game releases. From the customer's perspective, if you already own a Steam-acquired game on Windows, you can download the game on Mac OS X too via Steam without facing any additional charges...

Go to the link below for more info.
http://www.phoronix.com/scan.php?page=article&item=steam_linux_script&num=1