#!/bin/bash

# Guess! :P
shopt -s nullglob
set -e

# No trailing slashes please
WORKDIR="${HOME}"
PORTDIR="/services/gentoo/portage"
MINIMAL_PORTDIR="${WORKDIR}/portage"
NICENESS="19"
SUFFIX=$(date +%Y%m%d)
DESTDIR="${WORKDIR}"

cd "${WORKDIR}"
rsync -av --exclude="metadata.xml" --exclude="ChangeLog" "${PORTDIR}/" "${MINIMAL_PORTDIR}"
rm -f portage.tar*
tar cvf portage.tar "${MINIMAL_PORTDIR}"
nice -n ${NICENESS} pbzip2 portage.tar
mv portage.tar.bz2 "${DESTDIR}/portage-${SUFFIX}.tar.bz2"