qubes-linux-template-builder/cleanup_image

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#!/bin/sh
IMG=$1
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set -e
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if ! [ $# -eq 1 ]; then
echo "usage $0 <img_file_name>"
exit 1
fi
if ! [ -f $IMG ]; then
echo $IMG does not exist
exit 1
fi
ls -als $IMG
mount -o loop $IMG mnt || exit 1
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INSTALLDIR=`pwd`/mnt/
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yum -c $PWD/yum.conf clean packages --installroot=$INSTALLDIR
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# Make sure that rpm database has right format (for rpm version in template, not host)
echo "--> Rebuilding rpm database..."
chroot `pwd`/mnt /bin/rpm --rebuilddb
dd if=/dev/zero of=mnt/fillme bs=1M || true
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sync
rm mnt/fillme
umount mnt
cp --sparse=always $IMG $IMG.new
mv $IMG.new $IMG
ls -als $IMG