#!/bin/sh
if [ "`echo "$1" | grep .zip`" ]; then
    comando="unzip"
else
    if [ "`echo "$1" | grep .rar`" ]; then
        comando="unrar x -p-"
    else
        if [ "`echo "$1" | grep .ace`" ]; then
            comando="unace x -c-"
        else
            if [ "`echo "$1" | grep .tar.bz2`" ]; then
               comando="tar -xvjf"
            else
                if [ "`echo "$1" | grep .tar.gz`" ]; then
                   comando="tar -xvjf"
                else
                    comando="tar -xvf"
                fi
            fi
        fi
    fi
fi
dir=`dirname "$1"`
filename=`basename "$1"`
cd "$dir"
$comando "$filename"
cd "$OLDPWD"