linux安装jdk脚本

每次安装linux操作系统都需要下载jdk，安装jdk，设置环境变量，很麻烦，这次写个脚本，一次搞定

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#!/bin/bash 

chmod u+x jdk-6u29-linux-i586.bin 

installPath=/usr/java 

if [ ! -d /usr/java ]; 

then 

    mkdir /usr/java 

fi 

./jdk-6u29-linux-i586.bin -D  /usr/java 

cp  -R jdk1.6.0_29/ /usr/java/jdk1.6.0_29/ 

touch environment  www.2cto.com

echo "PATH=/"$PATH:/usr/java/jdk1.6.0_29/bin/"" >> environment 

echo "JAVA_HOME=/usr/java/jdk1.6.0_29/bin" >> environment 

echo "CLASSPATH=.:%JAVA_HOME%/lib/dt.jar:%JAVA_HOME%/lib/tools.jar" >> environment 

rm -rf /etc/environment 

cp environment /etc  

source /etc/environment 

update-alternatives --install /usr/bin/java java /usr/java/jdk1.6.0_29/bin/java 300 

update-alternatives --install /usr/bin/javac javac /usr/java/jdk1.6.0_29/bin/javac 300 

update-alternatives --config java   

摘自 yizhizouxiaqu的专栏