ssh过去时候，输入任何命令都卡住，需要按ctrl+c才能退出，这段代码是不是哪里不对了？

#!/bin/bash

###ssh机器

echo  "*****************欢迎来到ssh跳转********************"

function ShowMenu () {

   echo "   **********************"

   echo "   *   Operation Menu   *"

   echo "   **********************"

   echo "   * 1. hadoop2    *"

   echo "   * 2. hadoop1    *"

   echo "   * 3. hadoop3    *"

   echo "   * 0. Quit       *"

   echo "   **********************"

}

while true ;do

ip=`cat /root/ip.txt|awk '/hadoop2/{print $2}'`

ip1=`cat /root/ip.txt|awk '/hadoop3/{print $2}'`

passwd1=`cat /root/ip.txt|awk '/hadoop2/{print $NF}'`

passwd2=`cat /root/ip.txt|awk '/hadoop3/{print $NF}'`

ShowMenu

echo -n " enter your ssh: "

read link

case $link in

3)

        ping  -c 3  $ip1 &>  /dev/null  >> /tmp/ipcheck.log

        echo $?

        if [ $? -eq 0 ]

        then

       #    echo " hadoop3  OK" && echo  "****************你来到hadoop3,请输入密码登录********************" && ssh root@$ip1

#                echo " hadoop3  OK" && echo  "****************你来到hadoop3,请输入密码登录********************" && ssh root@$ip1

       # else

        #        echo " hadoop3  error"

       # fi

#passwd='123456'

/usr/bin/expect  <<-EOF

set timeout 30

spawn  ssh  root@$ip1

expect {

"yes/no" { send "yes\r"; exp_continue }

"password:" { send "$passwd2\r" }

}

expect "*#"

interact

expect eof

EOF

        else

               echo " hadoop3  error"

        fi

;;

0)

exit

;;

*)

echo  "error choice!!"

;;

esac

done

[root@hadoop1 ~]# ./ssh.sh

*****************欢迎来到ssh跳转********************

   **********************

   *   Operation Menu   *

   **********************

   * 1. hadoop2    *

   * 2. hadoop1    *

   * 3. hadoop3    *

   * 0. Quit       *

   **********************

 enter your ssh: 3

0

spawn ssh root@192.168.0.124

root@192.168.0.124's password:

Last login: Fri Sep 16 10:36:40 2016 from hadoop1

[root@hadoop3 ~]# ls

   **********************

   *   Operation Menu   *

   **********************

   * 1. hadoop2    *

   * 2. hadoop1    *

   * 3. hadoop3    *

   * 0. Quit       *

   **********************

 enter your ssh: error choice!!

^C