查看系统版本
centos系统
# centos7查看命令
[root@localhost ~]# cat /etc/os-release
# centos6/7通用命令
[root@localhost ~]# cat /etc/redhat-release
[root@localhost ~]# cat /etc/redhat-release | sed -r 's/.* ([0-9]+)\..*/\1/'
# centos6/7通用命令
[root@localhost ~]# cat /etc/centos-release
[root@localhost ~]# cat /etc/centos-release | sed -r 's/.* ([0-9]+)\..*/\1/'
# centos6/7通用命令
[root@localhost ~]# rpm -q centos-release
[root@localhost ~]# rpm -q centos-release | cut -d- -f3
# radhat或centos存在/etc/redhat-release这个文件。【命令 cat /etc/redhat-release】
ubuntu系统
ubuntu@vm-0-9-ubuntu:~$ lsb_release -a
ubuntu@vm-0-9-ubuntu:~$ cat /etc/os-release
ubuntu@vm-0-9-ubuntu:~$ cat /etc/issue
ubuntu@vm-0-9-ubuntu:~$ less /etc/issue
# ubuntu存在 : /etc/lsb-release 这个文件 【命令 cat /etc/lsb-release】
查看linux内核版本
[root@localhost ~]# cat /proc/version
[root@localhost ~]# uname -a
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