Java JDK 8 install

jdk8_install.sh

#!/usr/bin/env bash
exec 1> >(logger -s -t $(basename $0)) 2>&1
set -x
DOWNLOAD_DIR="/tmp/software/"
JDK_HOME="/opt/jdk8"
OUT_FILENAME="jdk-linux-x64.tar.gz"
URL="http://download.oracle.com/otn-pub/java/jdk/8u144-b01/090f390dda5b47b9b721c7dfaa008135/jdk-8u144-linux-x64.tar.gz"
if [ -f "${JDK_HOME}/bin/java" ]; then
  VERSION=`${JDK_HOME}/bin/java -version 2>&1|head -n 1`
  if [[ ${VERSION} == *"1.8.0_144"* ]]
  then
      echo already installed keeping ${JDK_HOME} ${VERSION}
      exit 0;
  fi

  if [[ ${JDK_HOME} == *"/opt/jdk"* ]]
  then
   echo uninstalling ${JDK_HOME} ${VERSION}
   rm -rf ${JDK_HOME}
  fi
fi

if [ ! -d "${DOWNLOAD_DIR}" ]; then
  echo "creating directory " ${DOWNLOAD_DIR}
  mkdir -p ${DOWNLOAD_DIR}
fi


CHECKSUM=`curl --silent -o - 'https://www.oracle.com/webfolder/s/digest/8u144checksum.html'|grep jdk.*linux-x64.tar|awk '{print $3}' | awk -F '<' '{print $1}'`
#if [ -f "${DOWNLOAD_DIR}/${OUT_FILENAME}" ]; then
#  echo "${CHECKSUM} ${DOWNLOAD_DIR}/${OUT_FILENAME}" | sha256sum -c
#  if (($? > 0)); then
#    mv -f ${DOWNLOAD_DIR}/${OUT_FILENAME} ${DOWNLOAD_DIR}/${OUT_FILENAME}.corrupted
#  fi
#fi

if [ ! -f "${DOWNLOAD_DIR}/${OUT_FILENAME}" ]; then
  echo "downloading $URL ..."
  curl --silent  -j -L -H "Cookie: oraclelicense=accept-securebackup-cookie"  -o ${DOWNLOAD_DIR}/${OUT_FILENAME} "${URL}"
fi

# checksum
if [ -f "${DOWNLOAD_DIR}/${OUT_FILENAME}" ]; then
  echo "${CHECKSUM} ${DOWNLOAD_DIR}/${OUT_FILENAME}" | sha256sum -c
  if (($? > 0)); then
    mv -f ${DOWNLOAD_DIR}/${OUT_FILENAME} ${DOWNLOAD_DIR}/${OUT_FILENAME}.corrupted
    exit 1
  fi
fi

mkdir ${JDK_HOME}
tar --strip-components 1 -xzf ${DOWNLOAD_DIR}/${OUT_FILENAME} -C ${JDK_HOME}
if (($? > 0)); then
  echo error extracting package
  exit 1
fi
chown -R root.root ${JDK_HOME}

TEMP_FILE=$(mktemp)
echo "export JAVA8_HOME=${JDK_HOME}" > ${TEMP_FILE}
echo "export PATH=\$PATH:${JDK_HOME}/bin" >> ${TEMP_FILE}
mv -f ${TEMP_FILE} /etc/profile.d/jdk8.sh
chmod 755 /etc/profile.d/jdk8.sh
echo setting env - JAVA8_HOME,PATH

VERSION=`${JDK_HOME}/bin/java -version 2>&1|head -n 1`
echo jdk installed ${VERSION}