介紹

Linux安裝JDK腳本。

系統要求

Ubuntu及其衍生系統

Debian及其衍生系統

使用

下載JDK

保存腳本為InstallJDK.sh

運行

示例

sudo bash InstallJDK.sh ~/Downloads/jdk-8u171-linux-x64.tar.gz

腳本

#!/bin/bash

#########################################################################

# File Name: offline-install-jdk.sh

# Author: bovenson

# Email: szhkai@126.com

# Created Time: 2017-09-19 15:52:15

#########################################################################

# 使用: bash InstallJDK.sh jdk-file.tar.gz

if [[ $EUID -ne 0 ]]; then

echo "This script must be run as root"

exit 1

fi

# 解壓jdk文件

extractFile() {

destPath="/usr/lib/jvm/${dirName}" # 解壓目標目錄

if [ -e $destPath ] ; then

echo "=============== $destPath exists ==============="

else

if [ ! -e /usr/lib/jvm ] ; then

mkdir -p /usr/lib/jvm

fi

echo "=============== Extracting files ==============="

tar -xzf $filePath -C /usr/lib/jvm/

echo "=============== Extracting files Done ==============="

fi

}

# 在Profile中設置PATH

setProfile() {

if [ -v JAVA_HOME ]; then

echo "=============== JAVA_HOME setted ==============="

exit 1

else

echo "=============== Setting profile ==============="

echo "# JDK setting" >> /etc/profile

echo "export JAVA_HOME=${destPath}" >> /etc/profile

echo "export CLASSPATH=\$CLASSPATH:.:\$JAVA_HOME/lib:\$JAVA_HOME/jre/lib" >> /etc/profile

echo "export PATH=\$PATH:\$JAVA_HOME/bin:\$JAVA_HOME/jre/bin" >> /etc/profile

echo "=============== Setting profile done ==============="

fi

}

main() {

source /etc/profile

extractFile

setProfile

echo "=============== ALL DONE ==============="

# source /etc/profile

# rm /usr/bin/java

# rm /usr/bin/javac

# ln -s /usr/lib/jvm/jdk/bin/java /usr/bin/java

# ln -s /usr/lib/jvm/jdk/bin/javac /usr/bin/javac

# # update-alternatives --install /usr/lib/java java /usr/lib/jvm/jdk/bin/java 300

# # update-alternatives --install /usr/lib/javac javac /usr/lib/jvm/jdk/bin/javac 300

# # update-alternatives --config java

java -version

}

# 檢查輸入文件

if [ ! $# -eq 1 ] ; then # 參數不正確

echo "=============================="

echo "Wrong Parameters."

echo "Usage: Command JDK-File-Path"

echo "Example: bash InstallJDK.sh jdk-1.8.11.tar.gz"

echo "=============================="

elif [ ! -f $1 ] ; then # 文件不存在

echo "=============== JDK file doesn't exists ==============="

exit -1

else # 開始安裝

echo "=============== Begin install JDK ==============="

filePath=$1 # 文件路徑

# 獲取解壓后文件夾名稱

fileNames=($(tar -tf $1))

dirName=${fileNames%/*}

main

fi

總結

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