摘要：
``` !/bin/sh 创建备份文件夹 oldBackHome=/opt/xxx_sql/old newBackHome=/opt/xxx_sql/new diffBackHome=/opt/xxx_sql/diff 保存的SQL文件统一文件名称 sqlNqme=xxx.sql diffName= 阅读全文
摘要：
#nginx /etc/repo/nginx.repo ``` [nginx]name=nginx repobaseurl=http://nginx.org/packages/centos/7/x86_64/gpgcheck=0enabled=1``` *yum makecache* *yum in 阅读全文