[arch-general] Script for finding and "moving" older duplicate packages from /var/cache/pacman/pkg

[Patrick Brisbin]

A while back i wrote a similar script which extracts the .PKGINFO file
from each package in one's cache. slow, but I think this is a more
accurate way to compare versions.

as-is, it will cp $N versions back from installed packages (inclusive)
to $WD/saveme, where N and WD are defined in the script.

i use it to save the N version, clean out my cache, then move them back.
but i think you could easily modify it to suit your usage case

instead of moving N versions to saveme you could echo the filename into
a saveme.lst, then mv anything not in saveme.lst to your oldpkg
directory.

or you could just take my little .PKGINFO / awk trickery and merge it
into your script...

or you could just ignore me and go with mod times :).

anyways, more info is always better, right? i've attached the script for
you to peruse.

thanks,
pat

On 08/25/09 at 12:51am, David C. Rankin wrote:
> On Monday 24 August 2009 11:51:45 pm David C. Rankin wrote:
> > 
> <snip> 
> > 	The script for finding and moving older duplicate packages is named fduppkg and is fairly self-explanitory. Running without arguments gives the options:
> > 
> 
> 	BASH never fails to amaze me, 3116 element array to handle the packages, and BASH never batted an eye. It just kept on trucking....
> 
> [00:41 archangel:/home/david/scripts/file] # ./fdup-archpkg -v
> 
> <big snip>
> 
> ${SARRAY[3114]} zenity-2.26.0-1-x86_64.pkg.tar.gz
> Search filename: zenity
> Search Architecture: x86_64
> Duplicate filename: zenity
> Duplicate Architecture: x86_64
> Keeping:  /var/cache/pacman/pkg/zenity-2.26.0-2-x86_64.pkg.tar.gz
> Duplicate found: 1
> Search filename: zenity
> Search Architecture: x86_64
> Duplicate filename: zenity
> Duplicate Architecture: x86_64
> `/var/cache/pacman/pkg/zenity-2.26.0-1-x86_64.pkg.tar.gz' -> `/home/backup/pkg-old/zenity-2.26.0-1-x86_64.pkg.tar.gz'
> removed `/var/cache/pacman/pkg/zenity-2.26.0-1-x86_64.pkg.tar.gz'
> Duplicate found: 2
> 
> ${SARRAY[3116]} zip-3.0-1-x86_64.pkg.tar.gz
> Search filename: zip
> Search Architecture: x86_64
> Duplicate filename: zip
> Duplicate Architecture: x86_64
> Keeping:  /var/cache/pacman/pkg/zip-3.0-1-x86_64.pkg.tar.gz
> Duplicate found: 1
> 
> Done!
> 
> [00:43 archangel:/home/david/scripts/file] # du -hcs /var/cache/pacman/pkg/
> 3.0G    /var/cache/pacman/pkg/
> 3.0G    total
> [00:48 archangel:/home/david/scripts/file] # du -hcs /home/backup/pkg-old/
> 5.2G    /home/backup/pkg-old/
> 5.2G    total
> 
> 	There's an extra 5.2G back ;-)
> 
> -- 
> David C. Rankin, J.D.,P.E.
> Rankin Law Firm, PLLC
> 510 Ochiltree Street
> Nacogdoches, Texas 75961
> Telephone: (936) 715-9333
> Facsimile: (936) 715-9339
> www.rankinlawfirm.com

-- 
patrick brisbin
-------------- next part --------------
#!/bin/bash
#
# pbrisbin 2009
#
###

N=3 # how may versions to keep -- includes installed

PD="/var/cache/pacman/pkg"
WD="/tmp/pacclean"

rm -rf $WD
mkdir -p $WD/saveme

LC_ALL="C"

pushd $WD &>/dev/null || exit 1

for package in $(find $PD -name *.pkg.tar.gz | sort -r); do
  gunzip < $package | tar -xf - .PKGINFO || exit 1
  file="$package"
  name="$(awk '/^pkgname/ {print $3}' .PKGINFO)"
  vers="$(awk '/^pkgver/ {print $3}' .PKGINFO)"
  echo "$name $vers $file" >> $WD/all.lst
done

popd &>/dev/null || exit 1

pacman -Qq | while read pack; do
  grep -m $N ^$pack\  $WD/all.lst | awk '{print $3}' | while read file; do
    cp -av $file $WD/saveme/
  done
done

echo "up to $N versions of each installed package are now in $WD/saveme"
echo "please verify everything you want is there before clearing your cache"

exit 0