which takes precedence?

[Luciano Rocha]

On Mon, Apr 07, 2008 at 11:13:17AM -0430, Patrick O'Callaghan wrote:
> On Mon, 2008-04-07 at 16:23 +0100, Luciano Rocha wrote:
> > On Mon, Apr 07, 2008 at 10:16:14AM -0430, Patrick O'Callaghan wrote:
> > > 
> > > On Mon, 2008-04-07 at 09:07 -0500, Aaron Konstam wrote:
> > > > At the bottom of the boot list there are instructions on how to edit a
> > > > boot line. If the line is edited and the number 3 is placed at the end
> > > > of the line the system will boot to run level 3. A 1 will get eh system
> > > > to boot to run level 1 and so on.
> > > 
> > > So this is a function of rhgb, not of init, i.e. it's some
> > > RedHat-specific magic.
> > 
> > No, it's a function of init. The kernel passes unrecognized options to
> > the init process, and init checks for a runlevel specification (1-5,
> > single, -b, s, etc.).
> 
> I believe you, but I'd still like to see where this is documented. My
> point is not that there's anything wrong with this, but that the
> required info is not easy to come by.
> 

It's in the manual page for init:

$ man init
...
BOOTFLAGS
       It  is possible to pass a number of flags to init from the boot monitor
       (eg. LILO). Init accepts the following flags:

       -s, S, single
            Single user mode boot. In this mode /etc/inittab is examined  and
            the  bootup rc scripts are usually run before the single user mode
            shell is started.

       1-5  Runlevel to boot into.

       -b, emergency
            Boot directly into a single user shell without running  any other
            startup scripts.
...

-- 
lfr
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