#!/bin/bash

set -e

if [ "$1" = "-h" -o "$1" = "--help" -o "$2" = "" ]; then
   echo ""
   echo "Unpack initramfs image to a directory"
   echo "Usage: $0 [source_initramfs_file.img] [target_directory]"
   echo ""
   exit 2
fi

mkdir -p "$2"

(cd "$2"; xz -d | cpio -idv) < "$1"