LFS Init scripts?

Mark Knecht markknecht at gmail.com
Thu Sep 30 15:22:57 PDT 2010

On Thu, Sep 30, 2010 at 2:39 PM, Ken Moffat <ken at linuxfromscratch.org> wrote:
> On Thu, Sep 30, 2010 at 01:32:09PM -0700, Mark Knecht wrote:
>> Thanks Bruce. I'm sure that will help me move forward.
>> Am I fooling myself in thinking that for a very simple hardware
>> system, maybe just an EXT2 boot, EXT3 / and a swap partition, that for
>> this specific machine the init scripts might be reduced to something
>> like 10-20 bash commands which get me to the bash command line where
>> as root I could use the system?
>  I hesitate to suggest things to someone who has used linux for
> quite a bit longer than I have [ I only started in late 1999 ], but
> how about booting (an LFS system) with init=/bin/bash ?  At that
> point, '/' is read-only, and you can run the individual scripts to
> make it usable.
>  It's a while since I've had to do that, but I think you need to run
> the scripts in rcsysinit.d before moving to the scripts for the
> desired runlevel.
>  But, yes, for an embedded system /sbin/init could be a script.  For
> most people who don't want a full-blown sysvinit, busybox is
> probably nicer than a script.
> ĸen
> --

Hi Ken,
   Not that much difference in time between you and I. What's a couple
of years when you've been at it for a decade or longer? ;-)

   Actually, init=/bin/bash is exactly what I'm doing with a Gentoo
system to play around with this right now but I haven't then managed
to get through the whole init process by hand and make the system
really operate correctly. I haven't completely the LFS system built
yet but when I do expect I'll do the same thing.

   While the building the software part of LFS isn't really my focus I
figure it will be good experience to go through that process once or
twice. The init scripts - learning what they do and in what order - is
what I'm curious about. I figured from the LFS progress description
there may be one or two folks here willing to share some of their
experience in that area. (I hope!)

   Thanks for the suggestion!


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