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I want to know where do I configure grub boot commands and commands called by lxsession-logout.

I wish to make splash screen and only error output on both startup and shutdown/reboot. Startup, as far as I know is somewhere in grub configs but shutdown is called by lxsession-logout and I don't know where it resides.

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This question is missing a good answer yet – H_7 Mar 6 '12 at 0:48
@H_7 I can't test any of these answers since my hard drive is dead, is there a good one here? – James Mar 8 '12 at 14:31

Try installing and configuring :sudo apt-get install startupmanager.

For changing the grub splash image have a look at this post.

There's also a plymouth manager. On Nvidia & ATI cards you might want to try a fix script.

Lightdm background:

sudo apt-add-repository ppa:claudiocn/slm
sudo apt-get update
sudo apt-get install simple-lightdm-manager

All I've heard of for shutdown is to comment out the following line (i.e., add # to the beginning of the line) in /etc/init/rc.conf:

#console output
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While the question isn't totally clear, I think he might be wanting a way to configure Plymouth? – Chuck R Mar 2 '12 at 16:37
I think the OP is referring to the boot-up and shutdown process as a whole. They consist of Grub, plymouth and then Lightdm – beanaroo Mar 2 '12 at 17:38

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