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shahim
Joined: 13 Feb 2004
Posts: 8
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| Posted: Fri Feb 13, 2004 5:28 am Post subject: Debian question |
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I am new to linux/debian. I am trying to figure out where during boot is the network configuration taking place.
From reading, I know that /etc/network/interfaces is the configuration file for ifup and ifdown and the changes I make are working but I can't seem to figure out when are these commands called during bootup.
Thanks,
Shahim |
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blahrus
Joined: 19 Jan 2004
Posts: 35
Location: Bloomington, IL
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| Posted: Fri Feb 13, 2004 9:11 am Post subject: |
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| what are you trying to change in the boot-up? |
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Bill Clinton
Joined: 23 Nov 2003
Posts: 79
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| Posted: Fri Feb 13, 2004 10:03 am Post subject: Re: Debian question |
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shahim wrote: I can't seem to figure out when are these commands called during bootup.
They are called in /etc/init.d/networking
Specifically line 124:
Code: echo -n "Configuring network interfaces: "
ifup -a
echo "done."
Bill Clinton |
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shahim
Joined: 13 Feb 2004
Posts: 8
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| Posted: Sun Feb 15, 2004 1:49 am Post subject: |
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Bill,
I don't have a link in rc2.d to /etc/init.d/networking. Does it get called from anywher else?
Shahim |
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Xan
Joined: 08 Feb 2004
Posts: 311
Location: Austin
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| Posted: Sun Feb 15, 2004 2:18 am Post subject: |
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By default in Debian, the network is started in runlevel 0.
Specifically, /etc/rc0.d/S35networking is a symlink to /etc/init.d/networking. |
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shahim
Joined: 13 Feb 2004
Posts: 8
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| Posted: Sun Feb 15, 2004 2:33 am Post subject: |
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| Isn't run level 0 used to halt the system? I am new to linux and appreciate your answers. |
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Xan
Joined: 08 Feb 2004
Posts: 311
Location: Austin
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| Posted: Sun Feb 15, 2004 2:41 am Post subject: |
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Other distributions may be different; I've really only had much experience with Gentoo and Debian.
My understanding is that when you boot up in runlevel 2 (or whatever) you've run all the lower runlevels in order. So on startup, all the files in rc0.d starting with S are run, then the ones in rc1.d, etc. When a runlevel is exited the K files are run in the reverse order.
If anybody knows this is wrong, please correct me, but AFAIK that's how Debian handles startup and shutdown. |
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shahim
Joined: 13 Feb 2004
Posts: 8
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| Posted: Sun Feb 15, 2004 2:50 am Post subject: |
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After some reading I think I found the answer.
First, inittab is ran, during that /etc/init.d/rcS is called.
rcS calls all the S scripts in /ect/rcS.d/ directory which does have a link to /etc/init.d/networking and some other links.
The other rc?.d directories are only called at their level.
link: http://www.debian.org/doc/debian-policy/ch-opersys.html#s9.3.4
If I am wrong please correct me. |
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Xan
Joined: 08 Feb 2004
Posts: 311
Location: Austin
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| Posted: Sun Feb 15, 2004 3:04 am Post subject: |
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Great reference there. Should have checked for one myself first. Looks like your reading is spot on.
Thanks for the education! |
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