前言

在Linux安装jdk是很简单的事情，那就让shell脚本去做吧！

安装

到oracle官网的归档网址下载需要的jdk压缩包，并放到脚本所在的目录，然后cd到脚本目录执行就可以，这里是1.8.172版本为例：

http://www.oracle.com/technetwork/java/archive-139210.html

#!/bin/bash

#must run by root

if [ "$UID" != "0" ]; then

echo "Please run this script by root "

exit 1

fi

# jdk archive site

ARCHURL='http://www.oracle.com/technetwork/java/archive-139210.html'

# pacage name

JDK_PACKAGE=jdk-8u172-linux-x64.tar.gz

JDK_DIR=jdk1.8.0_172

# JDKURL="http://192.168.1.71/software/jdk-8u172-linux-x64.tar.gz"

if [ ! -f ${JDK_PACKAGE} ]

then

echo "${JDK_PACKAGE} is not exists in current dir $(pwd)"

echo "go to ${ARCHURL} site to download."

exit 1

fi

echo "Download and extense tar package ... "

if [ ! -d "/opt/jdk" ]; then

# cd /root/

# wget $JDKURL

tar ${JDK_PACKAGE} -C /opt/

cd /opt

ln -s ${JDK_DIR} jdk

else

echo "/opt/jdk already exists!"

fi

echo "Setting JAVA_HOME ... "

if cat /etc/profile | grep '#JAVA_HOME set'; then

echo "JAVA_HOME already set !"

else

echo '#JAVA_HOME set' >>/etc/profile

echo "export JAVA_HOME=/opt/jdk" >>/etc/profile

echo 'export PATH=$JAVA_HOME/bin:$PATH' >>/etc/profile

fi

echo "ok"

通过文章下面的连接可以下载到脚本