Linux is a Unix clone written from scratch by Linus Torvalds with assistance from a loosely-knit team of hackers across the Net. It aims towards POSIX compliance. It has all the features you would expect in a modern fully-fledged Unix, including true multitasking, virtual memory, shared libraries, demand loading, shared copy-on-write executables, proper memory management and TCP/IP networking.
Linux内核更新是越来越快了,可能由于Linux的普及,大家都开始关注了,各种安全隐患也越来越多.支持Intel、Alpha、PPC、 Sparc、IA-64 、ARM、MIPS、Amiga、Atari和IBM s/390等,还支持32位大文件系统.而在Intel平台上,物理内存最大支持可以达到64GB.加强对IDE和SCSI硬件系统的支持,并增强了对 USB设备和3D加速卡的支持.
更新：http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.16.53
官网：http://www.kernel.org