Simple minecraft mod installer for mods that require .class files to be inside the ~/.minecraft/bin/mnecraft.jar file.

Minecraft Mod Installer for Linux

#!/bin/sh
TIMESTAMP=`date +%Y%m%d-%H%M%S`
INSTALLATION_TEMP=/tmp/minecraft
MINECRAFT_BIN=~/.minecraft/bin
MINECRAFT_BACKUPS=$MINECRAFT_BIN/../backups

# make our temporary directory
echo "Creating temporary directory"
mkdir $INSTALLATION_TEMP -p

# make our backup directory
echo "Creating backup directory"
mkdir $MINECRAFT_BACKUPS -p

echo "Making a backup of $MINECRAFT_BIN/minecraft.jar to $MINECRAFT_BACKUPS/$TIMESTAMP-minecraft.jar"
cp $MINECRAFT_BIN/minecraft.jar $MINECRAFT_BACKUPS/$TIMESTAMP-minecraft.jar

# Unpack Minecraft to the temporary directory
cd $INSTALLATION_TEMP

echo "Unpacking $MINECRAFT_BIN/minecraft.jar to ${PWD}"
jar xf $MINECRAFT_BIN/minecraft.jar

# Wait for user to dump files into temporary directory
echo "Drop your files into ${PWD}"
read INPUT

echo "Removing ${PWD}/META-INF/MOJANG_C.*"
# Remove the MetaDescription Data
rm ./META-INF/MOJANG_C.*

echo "Repacking to ${MINECRAFT_BIN}/minecraft.jar"
# Repack the fils into the minecraft jar binary
jar uf $MINECRAFT_BIN/minecraft.jar ./

echo "Removing temporary directory. ${INSTALLATION_TEMP}"
# Remove the temporary directory
cd ~
rm $INSTALLATION_TEMP -rf