PortableLinuxGames/unpackAppImage

#!/bin/bash
# Author : Ismael Barros² <ismael@barros2.org>
# License : BSD http://en.wikipedia.org/wiki/BSD_license

usage() { echo "$0 <image> <target>"; }

image="$1"
target="${2:-$(basename "$image" .run).AppDir}"
mountpoint="$(mktemp -d --suffix=_unpackAppImage)"

cleanup() { fusermount -u "$mountpoint"; }

[ -z "$image" ] && { usage; exit 1; }
[ -z "$target" ] && { usage; exit 1; }

echo "Unpacking \"${image}\" on \"${target}\"..."

mkdir -p "$target" || exit 1

fuseiso -p "$image" "$mountpoint" || exit 1
trap cleanup EXIT

cp -av "$mountpoint"/* "$target"/ || exit 1
cleanup