Install gradle on redhat/centos linux

install-gradle-centos.sh

# Originally from:
#   https://gist.github.com/parzonka/9371885
# ------------------------------------------------------------------------------
# - required packages: unzip, java
# - installs to /opt/gradle
# - existing versions are not overwritten/deleted
# - seamless upgrades/downgrades
# - $GRADLE_HOME points to latest *installed* (not released)
# ------------------------------------------------------------------------------

gradle_version=2.9
wget -N https://services.gradle.org/distributions/gradle-${gradle_version}-all.zip
sudo mkdir -p /opt/gradle
sudo unzip -o gradle-${gradle_version}-all.zip -d /opt/gradle
sudo ln -sfn gradle-${gradle_version} /opt/gradle/latest
sudo printf "export GRADLE_HOME=/opt/gradle/latest\nexport PATH=\$PATH:\$GRADLE_HOME/bin" > /etc/profile.d/gradle.sh
. /etc/profile.d/gradle.sh

# check installation
gradle