uname 查看内核信息

uname (1)            - print system information
    /etc/centos-release
    /usr/lib/os-release
    /etc/redhat-release
    /etc/system-release
    /proc/version
    -r, --kernel-release     print the kernel release
    -a, --all                print all information, in the following order, except omit -p and -i if unknown:
        [root@OS7 ~]# uname -a
        [root@OS7 ~]# uname -r