Linux和OSX的文件系统有什么区别？

As a long-time OSX user and noob programmer, the majority of programs I've installed have been done so using a dmg file that takes care of distributing source code to my computer's file system and compiling code when necessary. However as I spend more and more time in the Terminal I find that I want to install awesome stuff that comes to me as a tar.gz file. As a long-time OSX user and noob programmer, th