#!/bin/bash
set -e

usage="lxc-unpack TGZ"

if [ -z "$1" ]; then
	echo $usage
	exit 5
fi
tgz=$1
if [ "${tgz:0:1}" != "/" ]; then
	tgz="$(pwd)/$1"
fi

container=${tgz%.tgz}

cd /var/lib/lxc
if [ -e $container ]; then
	echo "container $container already existing"
	exit 10
fi

tar --numeric-owner -xf $tgz