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Possible Duplicate:
where is inittab file?

I have learned from the wikipedia that init is usually called by the kernel with an argument to specify the runlevel, in order to do different things according to different runlevel, and that runlevel can be found from /etc/inittab, but why I cannot find in /etc/inittab?

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marked as duplicate by Florian Diesch, Rinzwind, hhlp, Mik, Javier Rivera Nov 28 '12 at 18:41

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

There's a similar question and answer which might apply for your question as well. – elmicha Nov 28 '12 at 17:38
Take a look at Upstart. May help. – VedVals Nov 28 '12 at 18:07

Ubuntu uses different runlevels than other Linux distros.

It also uses rc*.d instead of inittab ( * going from 0 to 6). Open /etc/rcS.d/README & /etc/init.d/README to know more.

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Debian and derivatives use upstart ;) – Rinzwind Nov 28 '12 at 18:00
Isn't it about time Ubuntu updates the man boot then? ( – Mausy5043 May 10 '15 at 6:51

/etc/inittab is no longer used in Ubuntu. The configuration it provided for some services (such as TTYs) can be found in the upstart config. Runlevels as a concept has been made obsolete by this and has not been used for this in Ubuntu for quite a while now.

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