git.slaskete.net - einar-bin/blob - minecraft.sh

   1 #!/bin/bash
   2 # This script assumes that you have prepared various versions of
   3 # Minecraft bin folders in your $MC_HOME like this:
   4 # ${MC_HOME}/bin-version (example: ${MC_HOME}/bin-1.2.5)
   5 #
   6 # The script tries to preserve the various versions of the bin folder
   7 # by copying the selected bin folder to a "working folder", to prevent
   8 # accidental updates on launch.
   9 #
  10 # Use at your own risk, changing minecraft versions around may result in
  11 # unexpected and undesirable behaviour. You may lose your saves.
  12 # This script does not handle backups of the world data, I suggest using
  13 # deja-dup or similar backup software. It's good for you.
  14
  15 # Written by Einar Jørgen Haraldseid <einar@haraldseid.net>
  16 # inspired by a similar idea by Lars Erik Pedersen
  17
  18 # Released to the public under the WTFPL: http://sam.zoy.org/wtfpl/COPYING
  19
  20 # CONFIG STUFF - change these to suit your system
  21 MC_HOME="${HOME}/.minecraft"
  22 MC_LAUNCHER="${HOME}/bin/minecraft.jar"
  23 MC_COMMAND="java -Xmx2048M -Xms1024M -cp ${MC_LAUNCHER} net.minecraft.LauncherFrame"
  24
  25 # This might be needed to fix 64bit java on Linux (path to your 64bit java libs)
  26 # Uncomment this if not suitable.
  27 export LD_LIBRARY_PATH="/usr/lib/jvm/jre/lib/amd64/"
  28
  29
  30 # Here comes the code
  31
  32 if [ ${#} -ne 1 ]; then
  33         echo "Usage: 'minecraft <version>'"
  34         exit 1
  35 fi
  36
  37 MC_VERSION_FOLDER="${MC_HOME}/bin-${1}"
  38 MC_WORKING_FOLDER="${MC_HOME}/bin"
  39
  40 if [ ! -d "${MC_VERSION_FOLDER}" ]; then
  41         echo "Could not find that version folder."
  42         exit 1
  43 fi
  44
  45 if [ -d "${MC_WORKING_FOLDER}" ]; then
  46         rm -rf ${MC_WORKING_FOLDER}
  47 elif [ ! -d "${MC_WORKING_FOLDER}" ]; then
  48         echo "Minecraft bin folder is not a directory, bailing out."
  49         exit 1
  50 fi
  51
  52 if [ ! -e "${MC_WORKING_FOLDER}" ]; then
  53         cp -r ${MC_VERSION_FOLDER} ${MC_WORKING_FOLDER}
  54         ${MC_COMMAND}
  55 fi