10 things you should know about every Linux installation
Linux is not Windows, and although there are some similarities, you must realize that there may be a few "new ways of doing things" to learn before you can be comfortable in Linux. Linux is an open-source clone of UNIX, a secure operating system (OS) that predates DOS and Windows and is designed for multiple users. The items in the following list generally apply to any UNIX-based *nix system, such as Linux and the various BSD's. For the purposes of this article, assume that it's all Linux.
Here are the 10 things to know