< a > What Linux is

1. Linux is essentially the core of an operating system and the core tools it provides. He is the GNU GPL licensing model, so that anyone can get the original code and executable this core Asmeamerican sequence, and can be modified. In addition, because the Linux reference POSIX design specification is compatible with the UNIX operating system, along can also be called a Unix like one.

2. History of Unix:

① in 1965, Bell,mit and GE co-sponsored the Multics program, but Bell Labs withdrew from the program in 1969.

② in 1969, Kenthompson wrote the UNIX prototype in assembly language. Because Thompson will multics a large complex system to simplify a lot, so the same lab friends are nicknamed the system for UNICs.

③ in 1973, Unix was formally born, Ritchie and others wrote the first official UNIX core in C language. For a good transplant Unics,dennis Ritchie the B language into C, rewritten the core of UNICs and released the official version of UNIX.

④ 1977, the birth of the important UNIX branch-bsd. Bill Joy of the University of Berkeley developed the Berkeley SoftwareDistribution (BSD) after acquiring the core UNIX code. Bill Joy founded Sun and developed the commercial UNIX version at the core of BSD development.

⑤ 1979, important System V architecture and copyright announcements. At/T in the Seventh edition of Unix, released in 1979, special reference was made to the " non-availability of original code for students" restriction.

⑥ 1984, X86 architecture Minix operating system was born. Professor Andrew Tanenbaum in order to teach students to know Unix, they do not look at the source code to write Minix (Mini Unix) This UNIX like core program.

⑦ 1984, the GNU Program and the FSF Foundation were established. Richard Mathew Stallman started the GNU program in 1984 to create a free, open Unix operating system. and established the Free Software Foundation (FSF ) with the funds earned by the Emacs editor that he wrote. More engineers were asked to develop GCC, which increased the visibility of the GNU program.

⑧ 1988, graphical interface XFree86 plan. MIT and other third parties published The X Window System in 1984, and a non-profit XFREE86 organization was established in 1988.

3. Development of Linux:

① 1991, Finnish University student Linustorvalds claimed that he wrote a small core program that could operate on Intel's 386 machine, making many people feel interesting, and began the extraordinary journey of Linux!

② Virtual Team Generation: a single personal maintenance stage à the vast number of hackers volunteers to join the stage à core functions of the Division of the development stage of detail. The development of the Linux personnel each other in the sphere of the various corners, but set up a virtual team, the common development of today's Linux.

③ 1994, completed the core version of Linux-version 1.0.

④ many commercial companies or nonprofit groups have developed Linux distribution by integrating Linux Kernel (including tools) with operational software, along with their own creative tools.

< a > What Linux is