#!/bin/bash set -e VERSION="2.13.1" URL="https://search.maven.org/remotecontent?filepath=com/google/code/gson/gson/2.13.1/gson-2.13.1.jar" LIB_DIR="./lib" JAR_PATH="${LIB_DIR}/gson-${VERSIO}N.jar" mkdir -p "$LIB_DIR" if [ -f "$JAR_PATH" ]; then echo "gson-${VERSION}.jar already exists" else echo "gson-${VERSION}.jar herunter" curl -L "$URL" -o "$JAR_PATH" echo "Download succesfull" fi echo "Installation done. You can now run build.sh"