How to view the Linux kernel version

How to view the Linux kernel version [root @ localhost Desktop] # uname-a Linux localhost 2.6.32-131.0.15.el6.x86 _ 64 #1 SMP Tue May 10 15:42:40 EDT 2011 x86_64 x86_64 x86_64 GNU/linux indicates the current Linux the kernel version of the system is 2.6.32-131.0.15.el6.x86 _ 64, that is to say, the main version number is 2 times, the version number is 6, and the number is 32 to 131. el indicates that it is an enterprise-level Linux SMP. x86_64 indicates a symmetric multi-processor. minor. patch-build.desc major: number of patch packages or number of version modifications build: Number of compilations, each compilation may optimize or modify a small number of programs, but there is generally no major functional change desc: the current version of the special information, the information is specified during compilation. The following identifiers are commonly used: rc: candidate version. The larger the number, the closer it is to the official version SMP: symmetric multi-processor pp: test version el: Enterprise linux mm: test the new function version fc: represents Fedora Core in Red Hat Linux