gistfile1.txt

$ cat copy_ssh_keys.sh 
#!/usr/bin/env bash
file="$1"
if [ ! -f "$file" ] ; then
    echo "Usage: $0 [FILE]"
    exit 1
fi

user=`whoami`
echo "password: \c"
read password

while read host ; do
    echo $host
    ./copy_ssh_keys_expect.sh $user $password $host
done <$file

$ cat copy_ssh_keys_expect.sh 
#!/usr/bin/expect
set user [lindex $argv 0]
set password [lindex $argv 1]
set host [lindex $argv 2]

set timeout 60 
spawn scp $env(HOME)/.ssh/authorized_keys $user@$host:./.ssh/authorized_keys
while {1} {
  expect {

    eof                          {break}
    "The authenticity of host"   {send "yes\r"}
    "password:"                  {send "$password\r"}
    "*\]"                        {send "exit\r"}
  }
}
wait