java-6-oracle installer

#!/bin/sh
export URL="http://download.oracle.com/otn-pub/java/jdk/6u30-b12/jdk-6u30-linux-i586.bin"
export DIR="jdk1.6.0_30"

mkdir /usr/lib/jvm/java-6-oracle 2>/dev/null
cd /usr/lib/jvm/java-6-oracle || exit
rm -rf *
wget -O jdk.tmp $URL
unzip jdk.tmp
rm jdk.tmp
mv $DIR/* ./
rmdir $DIR
for file in `find -name "*.pack"`;do jre/bin/unpack200 $file ${file%%.pack}.jar;rm -f $file;done
rm /usr/lib/jvm/java-6-sun
ln -s java-6-oracle /usr/lib/jvm/java-6-sun