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Re: Questions after doing update and upgrade on Stretch

On Sun 21 May 2017 at 22:18:11 (+0200), Dejan Jocic wrote:
> On 21-05-17, David Wright wrote:
> > -rw-r--r-- 1 root root  134839 Apr 27 16:52 config-3.2.0-4-686-pae
> > drwxr-xr-x 3 root root   12288 Apr 28 07:44 grub
> > -rw-r--r-- 1 root root 2672854 Apr 28 07:44 initrd.img-3.2.0-4-686-pae
> > -rw-r--r-- 1 root root 1674268 Apr 27 16:52 System.map-3.2.0-4-686-pae
> > -rw-r--r-- 1 root root 2709184 Apr 27 16:51 vmlinuz-3.2.0-4-686-pae
> > 
> > (I have to notice these upgrades myself because they overwrite
> > my edited version of /boot/grub/grub.cfg which I then replace.)
> > 
> Sorry, but you are doing it wrong way. Grub 2 should not be customized
> by editing /boot/grub/grub.cfg , but by editing /etc/default/grub and
> files in /etc/grub.d/. Reason is obvious, your customization is lost
> whenever something related to linux-image is upgraded. Just saying :)

Yes, it would be nice to use the Debian Way. But there is not enough
flexibility in their scripts to do what I want.

a) the logic of
     # Uncomment if you don't want GRUB to pass "root=UUID=xxx" parameter to Linux
   is odd and, unfortunately, there's no facility for
   (I did have a shot at modifying the scripts, but it's less trivial
   than it would seem at first sight).

b) they insert entries for sysvinit and recovery but not for fsck.
   I modify the first subentry, using the ids fsck and fsck so I can use
   grub-reboot 'fsck>fsck'
   to invoke it from a script that also logs a timestamp. I refuse to
   type monstrosities like
   grub-reboot 'Advanced options for Debian GNU/Linux>gnulinux-advanced-7ccc1c1c-a690-418b-96c0-edcce6ebd3c1'

So it's far easier to write one python script to parse /run/udev/data,
automatically make the changes I want, and keep the original and
edited files as /boot/grub/grub.cfg-{uuids,edited}. After any upgrade,
if the former matches /boot/grub/grub.cfg, it gets overwritten by the


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