Simply put, Linux is a set of free and freely propagated UNIX operating systems, a multi-user, multi-task, multi-task, support system that supports multi-threaded and multi-CPU based on POSIX and UNIX operating systems. It runs the main UNIX tool software, applications, and network protocols. It supports 32-bit and 64-bit hardware. Linux inherits UNIX's design idea to network as core, is a multi-user network operating system with a performance stable. It is mainly used on a computer based on Intel X86 Series CPU. This system is designed and implemented by thousands of programmers around the world. Its purpose is to establish copyright restrictions that are not subject to any commercial software. The world can be freely used by Unix compatible products Linux known as its efficiency and flexibility. Linux modular design structure allows it to operate on a price expensive workstation, and can also achieve all UNIX features on the cheap PC, with multiple tasks, multi-user capabilities. Linux is free for GNU public licensed permissions and is a POSIX standard operating system. The Linux operating system software package includes not only a complete Linux operating system, but also application software such as text editor, advanced language compiler. It also includes a x-windows graphical user interface with multiple window managers, just like we use Windows NT, allow us to operate using windows, icons, and menus.
Linux has the advantages of UNIX: stable, reliable, safe, and powerful network function. Under the support of the relevant software, WWW, FTP, DNS, DHCP, E-mail, etc. can be implemented as a router, using ipchains / iptables to build NAT and functional firewalls.
Linux has a lot of release, more popular: Redhat Linux, Debian Linux, Redflag Linux, etc.
Redhat Linux, support Intel, Alpha, and SPARC platforms, with rich packages. It can be said that redhat Linux is very easy to use in the world of Linux, which is easy to operate, configured, and unique RPM module features make it easy to install software installation.
Debian Linux is based on a standard Linux kernel contains hundreds of packages such as GNU software, Tex, X Windows system, etc. Each package is a separate module unit that does not depend on any particular system version, and everyone can create their own packages. Debian Linux is a set of non-commercialized Linux work together by many volunteers.
Redflag Linux (red flag Linux) is a development product developed by Linux, which is developed by the Inter. Hongqi Software Technology Co., Ltd., which is developed by Intel and Alpha chips to the CPU. It marks a solid step in our country in the development of domestic operating systems. With respect to the Windows operating system and UNIX operating system, Linux has gained great development in the server operating system market with its openness and low cost. However, due to its complex operation interface, it is difficult for ordinary PC users to accept. GNOME is a project that specializes in developing a desktop environment in the GNU organization. GNOME as an open source software development results, based on a well-compatible CORBA technology, complementing the Linux system, bringing users more friendly interface, more use, inspection, modification, and distribution of freedom. Compared to KDE, which is the open source graphical user interface, GNOME performance is more able to alleviate labor for other companies to create Linux desktop applications. GNOME has become a trend software that industry is generally optimistic. After the server version 1.0, desktop version 2.0, after embedded Linux, Hongqi has recently launched a new product-Red Flag Server 2.0 and Red Flag Network Business Universities and other release versions and related releases. At present, the Hongqi software has laid a solid foundation in the Chinese market, making a new generation of operating system pioneers.
