简单的登录服务器脚本（不用每次输入密码）

#!/bin/bash
# usage: sh auto_login.sh 1.2.3.4
instance=$1
echo $instance
if [[ -z "$instance" ]]; then
	#statements
	echo "instance is null"
	exit
fi

sshpass -p **pwd** ssh -o StrictHostKeyChecking=no tryking@$instance