scp传输文件,自动填充密码

#!/usr/bin/expect
#*************************************************************************
#         > File Name: expect.sh
#         > Author: chenglee
#         > Main : chengkenlee@sina.com
#         > Blog : http://www.cnblogs.com/chenglee/
#         > Created Time : 2019年01月30日 星期三 18时16分56秒
#*************************************************************************
set user root
set pass lizhenghua
set dir /home/newland/filesend
set ip 192.168.137.176
set filen [lrange $argv 0 0]

spawn scp ${filen} ${user}@${ip}:${dir}
expect "${user}@${ip}‘s password:"
send "${pass}\r"
interact