homes=`find /home/* -maxdepth 0 -type d | tr '\n' ' '`

curl http://169.254.169.254/2009-04-04/meta-data/public-keys/0/openssh-key 2>/dev/null >/tmp/my-key

if [ $? -eq 0 ] ; then
    if [ ! -d /root/.ssh ] ; then
        mkdir -p /root/.ssh
        chmod 700 /root/.ssh
    fi

    dd if=/dev/urandom count=50 2>/dev/null|md5sum|awk '{ print $1 }'|passwd --stdin root >/dev/null
    cat /tmp/my-key >> /root/.ssh/authorized_keys
    chmod 600 /root/.ssh/authorized_keys

   for home in $homes; do
       user=`echo $home | awk -F '/' '{ print $3 }'`

       if [ ! -d $home/.ssh ] ; then
            mkdir -p $home/.ssh
            chmod 700 $home/.ssh
            chown $user $home/.ssh
        fi

       dd if=/dev/urandom count=50 2>/dev/null|md5sum|awk '{ print $1 }'|passwd --stdin $user >/dev/null
       cat /tmp/my-key >> $home/.ssh/authorized_keys
       chmod 600 $home/.ssh/authorized_keys
       chown $user $home/.ssh/authorized_keys

   done
   rm /tmp/my-key
fi