判断centos系统版本的shell

 1、查看cat /etc/centos-release

root@pts/0 # cat /etc/redhat-release|sed -r 's/.* ([0-9]+)\..*/\1/'
7
root@pts/15 # cat /etc/redhat-release|sed -r 's/.* ([0-9]+)\..*/\1/'
6

2、查看rpm -q centos-release

root@pts/0 # rpm -q centos-release|cut -d- -f3
7
root@pts/15 # rpm -q centos-release|cut -d- -f3
6

判断centos系统版本的shell

原文：http://blog.51cto.com/chaichuan/2069965