Linux originally did not use such a way of development, but later Linus believes that the development method of pure free software is not conducive to Linux development, and then some commercial workers will be added to this development team. They can use their own technologies to develop some own application on the basis of the kernel, and charge the fees to provide technical support. There are many release versions due to the current Linux. Now the mainstream has such a few versions: gorgeous suse, Debian from the Linux community in Germany, there is still a red hat that is later hosted. Now our domestic also increased the development of Linux, currently there are several quite good issued versions in our country: Red Flag, Red Flag, developed by the Chinese Academy of Sciences, Cocreat, Tuborlinux, Blue Point linux, And Xinhua launched Hua Linux.
