shell腳本中如何實現scp傳輸?

示例腳本如下:

#! /bin/sh
expect -c "
    spawn scp -r /home/jello/jello.txt jello@110.110.110.110:/home/jello/ 
    expect {
        \"*assword\" {set timeout 20; send \"jello\r\"; exp_continue;} #此處的jello為密碼，自行替換
    }
expect eof"