minecraft.sh - kjør en oppgitt minecraft-versjon

diff --git a/minecraft.sh b/minecraft.sh
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+#!/bin/bash
+# This script assumes that you have prepared various versions of
+# Minecraft bin folders in your $MC_HOME like this:
+# ${MC_HOME}/bin-version (example: ${MC_HOME}/bin-1.2.5)
+# 
+# The script tries to preserve the various versions of the bin folder
+# by copying the selected bin folder to a "working folder", to prevent
+# accidental updates on launch.
+#
+# Use at your own risk, changing minecraft versions around may result in
+# unexpected and undesirable behaviour. You may lose your saves.
+# This script does not handle backups of the world data, I suggest using
+# deja-dup or similar backup software. It's good for you.
+
+# Written by Einar Jørgen Haraldseid <einar@haraldseid.net> 
+# inspired by a similar idea by Lars Erik Pedersen
+
+# Released to the public under the WTFPL: http://sam.zoy.org/wtfpl/COPYING
+
+# CONFIG STUFF - change these to suit your system
+MC_HOME="${HOME}/.minecraft"
+MC_LAUNCHER="${HOME}/bin/minecraft.jar"
+MC_COMMAND="java -Xmx2048M -Xms1024M -cp ${MC_LAUNCHER} net.minecraft.LauncherFrame"
+
+# This might be needed to fix 64bit java on Linux (path to your 64bit java libs)
+# Uncomment this if not suitable.
+export LD_LIBRARY_PATH="/usr/lib/jvm/jre/lib/amd64/"
+
+
+# Here comes the code
+
+if [ ${#} -ne 1 ]; then
+       echo "Usage: 'minecraft <version>'"
+       exit 1
+fi
+
+MC_VERSION_FOLDER="${MC_HOME}/bin-${1}"
+MC_WORKING_FOLDER="${MC_HOME}/bin"
+
+if [ ! -d "${MC_VERSION_FOLDER}" ]; then
+       echo "Could not find that version folder."
+       exit 1
+fi
+
+if [ -d "${MC_WORKING_FOLDER}" ]; then
+       rm -rf ${MC_WORKING_FOLDER}
+elif [ ! -d "${MC_WORKING_FOLDER}" ]; then
+       echo "Minecraft bin folder is not a directory, bailing out."
+       exit 1
+fi
+
+if [ ! -e "${MC_WORKING_FOLDER}" ]; then
+       cp -r ${MC_VERSION_FOLDER} ${MC_WORKING_FOLDER}
+        ${MC_COMMAND}
+fi