ssh scp远程免密

#!/bin/bash
timeout=10
host=192.168.8.110
username=root
password=1234@qwer
src_file=/root/btc/dcp_otc/libs/common-1.0-SNAPSHOT.jar
dest_file=/root/
/usr/bin/expect<<END
spawn scp $username@$host:$src_file  $dest_file
 expect {
"yes/no" { send "yes\r"}
"*password:" { send "$password\r" }
}
expect eof
END