转自：http://blog.csdn.net/aichaoguy/article/details/11693269
#!/bin/bash

#check whether package 'expect' is installed.

if rpm -q expect

then echo "Good">/dev/null

else echo "You Must install package \'expect\'"; exit 0

fi

#开始产生exp文件

cat >/tmp/auto.tcl<<eof

#!/usr/bin/expect -f

set timeout -

set host [lrange \$argv  ]

spawn ssh-copy-id -i /root/.ssh/id_rsa.pub root@\$host

expect "*connecting*"

send "yes\r"

expect "*?assword:"

send "12341234\r"

expect eof

eof

chmod 755 /tmp/auto.tcl

rm -f /root/.ssh/known_hosts

for hostname in `cat cluster`; do

    expect -f /tmp/auto.tcl $hostname;

    echo "********$hostname*********">> ssh_copy_id.log;

done