Introduction - If you have any usage issues, please Google them yourself
Simply put, Linux is a Unix clone (Unix clone) or a Unix-style (Unix alike) operating system (OS), the original source-level compatible with most Unix standard (refer to the IEEE POSIX, System V, BSD), is a a support for multi-user, multi-process, multi-threaded, real-time nature of good and powerful and stable operating system. It can run on x86 PC, Sun Sparc, Digital Alpha, 680x0, PowerPC, MIPS and other platforms, it can be said that Linux is a currently running operating system, hardware platform, the most