#!/bin/bash
# There is little data security here, so know what you're doing.
# All risks in using this code are yours. It moves and deletes files quite stupidly.
# (c) Daniel Lange, 2009, v0.01, released into the public domain
if [ $# -ne 1 ] ; then
        echo "Error: $0 expects exactly one argument, a (fully qualified) path/to/a/zipfile"
        exit 1
fi
if [ ! -r $1 ] ; then
        echo "Error: file does not exist or no read permission on $1"
        exit 2
fi
if [ ! -w "$(dirname $1)" ] ; then
        echo "Error: cannot write to directory of $1"
        exit 3
fi
if [ "$(head -c 2 $1)" == "PK" ] ; then
        mv $1 $1.tmp
        mkdir -p $1
        unzip -d $1 $1.tmp
        rm $1.tmp
else echo "$1 is not a zipfile"
fi