A "script" with a size of 172 MB? You must be trippin' if you think I'm installing that.
EDIT: OK. Now I have looked into the file you linked to, and it is not so mischievous as it seems. What you want people to download is a DMG file containing Java 7 (at least), modified to execute some additional homemade scripts that first backs up your old java install, and then modifies it to make it work with Java 6. Thank you for the effort, Islam, but I am a bit too skeptical to install anything this big that is just labelled as a script. Danke jedenfalls :-)
This is the content of the main script for anyone else that might be interested
#!/bin/bash
# 2013-03-10
# By Islam Adel
# enable Java 6 with Java 7 installed
# USE AT OWN RISK
#
# Tested on Mac OS X 10.8.2 with Java 7 update 17
#
# Files to update when new Java available:
#
# Library_Internet-Plug-Ins/JavaAppletPlugin.plugin
# Library_Internet-Plug-Ins/JavaPlugin2_NPAPI.plugin
# System_Library/Java
# System_Library_Frameworks/JavaFrameEmbedding.framework
# System_Library_Frameworks/JavaVM.framework
#
# get BASE DIR
clear
BD=$(echo $0|sed 's/ /\\ /g')
BASEDIR=$(dirname "$BD")
#echo $BASEDIR
BDP=$(echo $BASEDIR|sed 's/\\ / /g')
#echo CURRENTDIR IS BDP="$BDP"
# current date time
NOW="$(date '+%Y-%m-%d_%H-%M-%S')"
NOW=backup_$NOW
echo
echo Activate Java 6 with Java 7 already installed
echo
echo System Requirements: Mac OS X 10.8.x with Java 7 update 17 installed.
echo
echo run this script as admin and enter user password if required.
echo
read -p "Hit ENTER to continue.."
# BackUp / Rename Current Files
echo
echo
echo [1/5] Backing up installed Java Files..
echo
echo
sudo mkdir "/usr/bin/$NOW"
# Success Count
SUC=8
# Add 1
# SUC=$(($SUC+1));
echo [1.1/1.8] /usr/bin/javaws
sudo mkdir -p ~/Documents/Java_Backup/$NOW/usr_bin
sudo cp -Rf /usr/bin/javaws ~/Documents/Java_Backup/$NOW/usr_bin/
if [ "$?" == "0" ]; then SUC=$(($SUC-1)); else echo "COPY ERROR"; fi
echo [1.2/1.8] /usr/bin/java
sudo mkdir -p ~/Documents/Java_Backup/$NOW/usr_bin
sudo cp -Rf /usr/bin/java ~/Documents/Java_Backup/$NOW/usr_bin/
if [ "$?" == "0" ]; then SUC=$(($SUC-1)); else echo "COPY ERROR"; fi
echo [1.3/1.8] /System/Library/Frameworks/JavaVM.framework
sudo mkdir -p ~/Documents/Java_Backup/$NOW/System_Library_Frameworks
sudo cp -Rf /System/Library/Frameworks/JavaVM.framework ~/Documents/Java_Backup/$NOW/System_Library_Frameworks/
if [ "$?" == "0" ]; then SUC=$(($SUC-1)); else echo "COPY ERROR"; fi
echo [1.4/1.8] /System/Library/Frameworks/JavaFrameEmbedding.framework
sudo cp -Rf /System/Library/Frameworks/JavaFrameEmbedding.framework ~/Documents/Java_Backup/$NOW/System_Library_Frameworks/
if [ "$?" == "0" ]; then SUC=$(($SUC-1)); else echo "COPY ERROR"; fi
echo [1.5/1.8] /System/Library/Java
sudo mkdir -p ~/Documents/Java_Backup/$NOW/System_Library
sudo cp -Rf /System/Library/Java ~/Documents/Java_Backup/$NOW/System_Library/
if [ "$?" == "0" ]; then SUC=$(($SUC-1)); else echo "COPY ERROR"; fi
echo [1.6/1.8] /Library/Internet\ Plug-Ins/JavaAppletPlugin.plugin
sudo mkdir -p ~/Documents/Java_Backup/$NOW/Library_Internet-Plug-Ins
sudo cp -Rf /Library/Internet\ Plug-Ins/JavaAppletPlugin.plugin ~/Documents/Java_Backup/$NOW/Library_Internet-Plug-Ins/
if [ "$?" == "0" ]; then SUC=$(($SUC-1)); else echo "COPY ERROR"; fi
echo [1.7/1.8] /Library/Internet\ Plug-Ins/JavaPlugin2_NPAPI.plugin
sudo cp -Rf /Library/Internet\ Plug-Ins/JavaPlugin2_NPAPI.plugin ~/Documents/Java_Backup/$NOW/Library_Internet-Plug-Ins/
if [ "$?" == "0" ]; then SUC=$(($SUC-1)); else echo "$0"; fi
echo [1.8/1.8] /System/Library/CoreServices/CoreTypes.bundle/Contents/Resources/XProtect.meta. plist
sudo mkdir -p ~/Documents/Java_Backup/$NOW/System_Library_CoreServices_CoreTypes.bundle_Conte nts_Resources
sudo cp -f /System/Library/CoreServices/CoreTypes.bundle/Contents/Resources/XProtect.meta. plist ~/Documents/Java_Backup/$NOW/System_Library_CoreServices_CoreTypes.bundle_Conte nts_Resources/XProtect.meta.plist
if [ "$?" == "0" ]; then SUC=$(($SUC-1)); else echo "COPY ERROR"; fi
# copy restore script
sudo cp -f $BDP/scripts/restore-java-backup.sh ~/Documents/Java_Backup/$NOW/
sudo chmod 775 ~/Documents/Java_Backup/$NOW/restore-java-backup.sh
echo
echo
echo Current Java Files have been backed up for later restore in:
echo
TARG=~/Documents/Java_Backup/$NOW/
echo "Path: "[$'\e[1;32m' $TARG $'\e[00m']
echo
echo If you want to restore back, go to the path and open the restore script.
echo
read -p "Hit ENTER to continue.."
# Remove old Files
echo
echo
echo [2/5] Removing old Java Files..
echo
# Warn on backup errors
if [ "$SUC" != "0" ]; then read -p "At least [ $SUC ] file(s) may have not been backed up: ctrl + c to cancel or ENTER to continue"; fi
echo
echo [2.1/2.8] /usr/bin/javaws
sudo rm -f "/usr/bin/javaws"
echo [2.2/2.8] /usr/bin/java
sudo rm -f "/usr/bin/java"
echo [2.3/2.8] /System/Library/Frameworks/JavaVM.framework
sudo rm -Rf "/System/Library/Frameworks/JavaVM.framework"
echo [2.4/2.8] /System/Library/Frameworks/JavaFrameEmbedding.framework
sudo rm -Rf "/System/Library/Frameworks/JavaFrameEmbedding.framework"
echo [2.5/2.8] /System/Library/Java
sudo rm -Rf "/System/Library/Java"
echo [2.6/2.8] /Library/Internet\ Plug-Ins/JavaAppletPlugin.plugin
sudo rm -Rf "/Library/Internet Plug-Ins/JavaAppletPlugin.plugin"
echo [2.7/2.8] /Library/Internet\ Plug-Ins/JavaPlugin2_NPAPI.plugin
sudo rm -Rf "/Library/Internet Plug-Ins/JavaPlugin2_NPAPI.plugin"
echo [2.8/2.8] /System/Library/CoreServices/CoreTypes.bundle/Contents/Resources/XProtect.meta. plist
sudo rm -f "/System/Library/CoreServices/CoreTypes.bundle/Contents/Resources/XProtect.meta .plist"
# Copy all Files
echo
echo
echo [3/5] Copying new Java Files..
echo
echo
echo [3.1/3.6] /System/Library/Frameworks/JavaVM.framework
sudo cp -Rf "$BDP/System_Library_Frameworks/JavaVM.framework" "/System/Library/Frameworks/"
if [ "$?" != "0" ]; then echo "ERROR: [$?]"; fi
echo [3.2/3.6] /System/Library/Frameworks/JavaFrameEmbedding.framework
sudo cp -Rf "$BDP/System_Library_Frameworks/JavaFrameEmbedding.framework" "/System/Library/Frameworks/"
if [ "$?" != "0" ]; then echo "ERROR: [$?]"; fi
echo [3.3/3.6] /System/Library/Java
sudo cp -Rf "$BDP/System_Library/Java" "/System/Library/"
if [ "$?" != "0" ]; then echo "ERROR: [$?]"; fi
echo [3.4/3.6] /Library/Internet Plug-Ins/JavaAppletPlugin.plugin
sudo cp -Rf "$BDP/Library_Internet-Plug-Ins/JavaAppletPlugin.plugin" "/Library/Internet Plug-Ins/"
if [ "$?" != "0" ]; then echo "ERROR: [$?]"; fi
echo [3.5/3.6] /Library/Internet Plug-Ins/JavaPlugin2_NPAPI.plugin
sudo cp -Rf "$BDP/Library_Internet-Plug-Ins/JavaPlugin2_NPAPI.plugin" "/Library/Internet Plug-Ins/"
if [ "$?" != "0" ]; then echo "ERROR: [$?]"; fi
echo [3.6/3.6] /System/Library/CoreServices/CoreTypes.bundle/Contents/Resources/XProtect.meta. plist
sudo cp -f "$BDP/Sys_Lib_cs_ct_Resources/XProtect.meta.plist" "/System/Library/CoreServices/CoreTypes.bundle/Contents/Resources/"
if [ "$?" != "0" ]; then echo "ERROR: [$?]"; fi
# Set SymLinks
echo
echo
echo [4/5] Set SymLinks..
echo
echo
echo [4.1/4.2] /System/Library/Java/Support/Deploy.bundle/Contents/MacOS/javaws
sudo ln -sf "/System/Library/Java/Support/Deploy.bundle/Contents/MacOS/javaws" "/usr/bin/javaws"
if [ "$?" != "0" ]; then echo "ERROR: [$?]"; fi
echo [4.2/4.2] /System/Library/Frameworks/JavaVM.framework/Versions/A/Commands/java
sudo ln -sf "/System/Library/Frameworks/JavaVM.framework/Versions/A/Commands/java" "/usr/bin/java"
if [ "$?" != "0" ]; then echo "ERROR: [$?]"; fi
# rechte setzen
echo
echo
echo [5/5] Setting user rights..
echo
echo
echo [5.1/5.2] /usr/bin/javaws
sudo chmod 775 "/usr/bin/javaws"
if [ "$?" != "0" ]; then echo "ERROR: [$?]"; fi
echo [5.2/5.2] /usr/bin/java
sudo chmod 775 "/usr/bin/java"
if [ "$?" != "0" ]; then echo "ERROR: [$?]"; fi
# fertig
echo
echo
read -p "process done"
exit
