How find reinstall/replace Grub2 menu generation scripts

Question

I'm trying to figure out how to reinstall/get copies of the scripts that Ubuntu has in the /etc/grub.d/ folder. The scripts have names like 00_header and 05_debian_theme. They're used when the command update-grub is run, to generate the Grub2 menu listing.

I was playing around with some customization stuff, and accidentally deleted all of the scripts (well, actually I deliberately deleted them, assuming that reinstalling the grub-pc package would replace them. Bad assumption!)

Does anyone know how to reinstall all the default Grub2 scripts that Ubuntu 12.04 ships with? Or, failing that, can someone point me to a resource to get the contents of the scripts? (I'm plenty willing to copy-paste them in...I don't want to have to reinstall all of Ubuntu for this silly mistake.)

Answer 1

Removing and reinstalling grub2-common should do the trick. Try:

sudo apt-get purge grub2-common
sudo apt-get install grub2-common

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In general, you can find what files a package installs either through Synaptic (Right click on a package => Properties => Installed Files), or by running dpkg -L <package_name>.

In your case, you know that it has to be one of the grub related packages and you need to know which one installed 00_header, for example. First, list all grub related packages, then search for 00_header in the list of files that each of them installs:

1. Find what grub related packages are installed:

   $ dpkg -l grub* | grep ii
   

2. Find which of them installs 00_header :

   $ for n in $(dpkg -l grub* | grep ii | awk '{print $2}'); do echo  "$n :  `dpkg -L $n | grep 00_`"; done