哪位大神可以把它翻译成shell脚本啊

fangj1n

#!/bin/bash
export addr=$RANDOM
/usr/bin/expect<<\EOF
set timeout 5
spawn telnet $addr.com 25
expect "*220*"
send "mail from:13543@35.com\r"
expect "250 2.1.0 ok"
send "rcpt to:gentoo@126.com\r"
expect "250 2.1.5 ok"
send "quit\r"
expect eof
EOF

我写成这样，可是执行不了，

fangj1n

go@ubuntu ~$ ./o
can't read "addr": no such variable
    while executing
"spawn telnet $addr.com 25"

出现问题