How to find what process are started during bootup process. Are there any ways to find using any command, like one found in windows
For more about please read. http://en.wikipedia.org/wiki/MSConfig
Most of the scripts inside
/etc/init.d are run during bootprocess if you haven't changed any of their configurations. There is an application called BootUpManager i.e.
sudo apt-get install bum
which will let you configure bootup scripts.
Ubuntu uses upstart i.e.
/etc/init/*.conf for bootup scripts
Most of the bootup processes get low PID numbers [or so it seems]. So try this
$ ps -ef|less
and view the low PID processes.
Also, as previously mentioned, check /etc/init/ and /etc/init.d/