From Ubuntu:

sudo apt-get install expect

Create a script like this one: sshlogin.exp

#!/usr/bin/expect -f
set password [lrange $argv 0 0]
set ipaddr [lrange $argv 1 1]
set username [lrange $argv 2 2]
set command [lrange $argv 3 3]

set timeout -1

spawn ssh $username@$ipaddr $command
match_max 100000

expect "*?assword:*"
send -- "$password\r"
send -- "\r"
expect eof

Create your automation script: fixpack.sh

#!/bin/bash

arrServers=(db2srv1 db2srv2 db2srv3 db2srv4 db2srv5 db2srv6 db2srv7 db2srv8 db2srv9 db2srv10)

username=db2usr
password=123456
command=db2ls

for server in ${arrServers[@]}
do
  echo $server
  echo "--------"
  ./sshlogin.exp $password $server $username $command
  echo " " 
done

Then just run fixpack.sh, it will show you the result of db2ls !