ssh 免交互登录 ，远程执行命令脚本。

##免交互SSH登录
auto_login_ssh () {
    expect -c "set timeout -1;
                spawn -noecho ssh -o StrictHostKeyChecking=no $2 ${@:3};
                expect *assword:*;
                send -- $1\r;
                interact;";

 示例：

auto_login_ssh  密码  用户名@IP     "sh /root/wangfeng/check.sh"   >>/root/wangfeng/tmp/test.txt
cat /root/wangfeng/tmp/test.txt

执行远端服务器  /root/wangfeng/check.sh 脚本，输出返回至本地  /root/wangfeng/tmp/test.txt