[arch] rebuild pacman database

[RedShift]

Xiaoyu Peng wrote:
> Hello everyone:
> 
> I did a very stupid operation today that i remove the whole
> /var/lib/pacman/local :(
> 
> I didn't know what would happen untill I found all the
> package-dependences have gone.
> 
> I have no idea about how to fix it, so turn to the maillist for help.
> I really don't want to reinstall my Arch because it has been used over
> one years with everythig works fine.
> 
> Thanks in advance
> 
> Best regards

Just copy your /home and your /etc directory to a safe place and 
reinstall your system. In the meantime you'll have a fresh install. When 
you're done installing your system just put /home and /etc back in it's 
place (maybe it smart to selectively copy files from your old /etc, so 
you don't copy over the mess your previous system was).

When copying don't forget to keep permissions. Upon reinstalling make 
sure your groupid and userid are the same as on your old system. The 
tools supplied allow overriding the default "increment previous id".

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