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Optimisation of Java Bytecode via EOLANG

There is a newer version: 0.0.8

#!/bin/bash
# The MIT License (MIT)
#
# Copyright (c) 2024 Objectionary.com
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included
# in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.

set -ex

if mvn --version 2>/dev/null; then
  echo "Maven already installed"
  exit
fi

if [ -z "${JAVA_HOME}" ]; then
  JAVA_HOME=$(find /usr/lib/jvm -name 'java-*' | head -1)
  export JAVA_HOME
fi

MAVEN_VERSION=3.9.9
M2_HOME="/usr/local/apache-maven/apache-maven-${MAVEN_VERSION}"

echo "export M2_HOME=/usr/local/apache-maven/apache-maven-\${MAVEN_VERSION}" >> /root/.profile
wget --quiet "https://dlcdn.apache.org/maven/maven-3/${MAVEN_VERSION}/binaries/apache-maven-${MAVEN_VERSION}-bin.tar.gz"
mkdir -p /usr/local/apache-maven
mv "apache-maven-${MAVEN_VERSION}-bin.tar.gz" /usr/local/apache-maven
tar xzvf "/usr/local/apache-maven/apache-maven-${MAVEN_VERSION}-bin.tar.gz" -C /usr/local/apache-maven/
update-alternatives --install /usr/bin/mvn mvn "${M2_HOME}/bin/mvn" 1
update-alternatives --config mvn

mvn -version
bash -c '[[ "$(mvn --version)" =~ "${MAVEN_VERSION}" ]]'