git.slaskete.net - einar-bin/blob - getlatestminecraftserver.bash

   1 #!/bin/bash
   2 # A quick and dirty script to fetch the latest stable minecraft_server.jar
   3
   4 VERSION_URL="https://launchermeta.mojang.com/mc/game/version_manifest.json"
   5 LATEST_VER=$(wget -qO - "${VERSION_URL}" | jq -r .latest.release)
   6 # Our CURRENT_VER is stored in current_ver and we don't need no stinking error messages
   7
   8 source current_ver > /dev/null 2>&1
   9
  10 # Check if we need a new minecraft_server.jar
  11 if [ ! "${CURRENT_VER:-1}" = "${LATEST_VER}" ] || [ ! -f minecraft_server.jar ]; then
  12   LATEST_MANIFEST=$(wget -qO - "${VERSION_URL}" | jq -r --arg VERSION_TARGET "${LATEST_VER}" '.versions | .[] | select(.id==$VERSION_TARGET) | .url')
  13   LATEST_SERVER_URL=$(wget -qO - "${LATEST_MANIFEST}" | jq -r .downloads.server.url)
  14   wget -q "${LATEST_SERVER_URL}" -O minecraft_server.jar && echo "CURRENT_VER=${LATEST_VER}" > current_ver
  15 fi