2018-04-15 Ubuntu Version

Ubuntu version

uname -a
cat /ect/issue
cat /etc/os-release
cat /proc/version

lsb_release -a

CentOS version

CentOS 7查看系统版本及查看机器位数x86-64
http://www.linuxidc.com/Linux/2016-11/137550.htm

    uname -a
    file /bin/ls
    
    cat /etc/os-release
    cat /etc/redhat-release
    cat /proc/version
    
    rpm -q centos-release

如何查看已安装的CentOS版本信息
http://www.linuxidc.com/Linux/2014-12/110748.htm

    cat /ect/issue