一、linux下如何查看已安装的centos版本信息:
1.Linux查看当前操作系统版本信息 cat /proc/version
Linux version 2.6.32-696.el6.x86_64 (mockbuild@c1bm.rdu2.centos.org) (gcc version 4.4.7 20120313 (Red Hat 4.4.7-18) (GCC) ) #1 SMP Tue Mar 21 19:29:05 UTC 2017
2.Linux查看版本当前操作系统内核信息 uname -a
Linux localhost.localdomain 2.4.20-8 #1 Thu Mar 13 17:54:28 EST 2003 i686 athlon i386 GNU/Linux
3.linux查看版本当前操作系统发行信息 cat /etc/issue 或 cat /etc/centos-release
CentOS release 6.9 (Final)
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