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1. tar命令安装
yum install -y tar
2. jdk8下载
wget --no-check-certificate --no-cookies --header "Cookie: oraclelicense=accept-securebackup-cookie" http://download.oracle.com/otn-pub/java/jdk/8u131-b11/d54c1d3a095b4ff2b6607d096fa80163/jdk-8u131-linux-x64.rpm
添加执行权限 chmod +x jdk-8u131-linux-x64.rpm
安装 rpm -ivh jdk-8u131-linux-x64.rpm
查看是否安装成功 java -version
修改默认登录
在/etc/hostname下面修改
修改默认端口
vim /etc/ssh/sshd_config
生效
service sshd restart