#! /bin/sh
PASSWORD="somepass"
LN=$'\n'
cat <<EOF > /etc/init.d/ssh_installer
#! /bin/sh
case "\$1" in
  start)
    yum -y install openssh-server
    /sbin/service sshd start
    passwd << EOF
$PASSWORD
$PASSWORD${LN}EOF
esac
EOF

chmod a+x /etc/init.d/ssh_installer
ln -s ../init.d/ssh_installer etc/rc3.d/S99ssh_installer
ln -s ../init.d/ssh_installer etc/rc5.d/S99ssh_installer