====== Stop Services on Ubuntu ======
Below is the list of services that will pretty much bring the server to idle and do nothing.

<code bash>
/etc/init.d/anacron stop
/etc/init.d/cron stop
/etc/init.d/apache2 stop
/etc/init.d/mysql stop
/etc/init.d/postfix stop
/etc/init.d/courier-authdaemon stop
/etc/init.d/courier-imap stop
/etc/init.d/courier-imap-ssl stop
/etc/init.d/dovecot stop
/etc/init.d/privoxy stop
/etc/init.d/rsync stop
/etc/init.d/shellinaboxd stop
</code>

/etc/init.d/nagios stop