[arch] rebuild pacman database

[Attila]

On Samstag, 6. Januar 2007 19:54 Pierre Schmitz wrote:

> Well, he might want to have a look at /var/log/pacman.log and reinstall
> everything. Good luck ;-) (perhaps it might be easier to reinstall arch...

The idea is not so bad as it looks in the first moment. But PLEASE all who
have more experience with arch and bash take a look at the following lines
and comment it to give Xiaoyu the best possible help.

With this commands

grep installed /var/log/pacman.log | cut -d' ' -f4-5 | sort > ~/long_version
grep installed /var/log/pacman.log | cut -d' ' -f4 | sort > ~/short_version
grep removed /var/log/pacman.log | cut -d' ' -f4-5 | sort > ~/removed_list

you can get the the lists of the installed and removed packages. The only
problem is that there are duplicates per line but it is better than nothing
and perhaps one expert here can say how to delete this duplicates.

At first copy /etc and then reinstall groups as xorg which you have had
installed. Then make this

pacman -Q | sort | cut -d' ' -f1 > installed_packages_short

and look at the differences with this

sdiff short_version installed_packages_short | less

Now start your reinstall orgy. And even have a look at "removed_list" too
because perhaps you have removed some packages.

It is complicated but from my view better than installing the whole system
because if you install a new arch system you will have the same problem with
making the differences in /etc and having all packages as before.

See you, Attila