linux下使用wget下载jdk8

进到目录/usr/local/software

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cd /usr/local/software

下载jdk8到本地

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wget --no-cookies --no-check-certificate --header "Cookie: gpw_e24=http%3A%2F%2Fwww.oracle.com%2F; oraclelicense=accept-securebackup-cookie" "http://download.oracle.com/otn-pub/java/jdk/8u141-b15/336fa29ff2bb4ef291e347e091f7f4a7/jdk-8u141-linux-x64.tar.gz"

解压文件夹

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tar -zxvf jdk-8u141-linux-x64.tar.gz jdk1.8.0_141/  

修改解压后文件夹名为jdk8

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mv jdk1.8.0_141 jdk8

配置环境变量

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vim /etc/profile

加入

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export JAVA_HOME=/usr/local/software/jdk8
export JAVA_BIN=/usr/local/software/jdk8
export PATH=$PATH:$JAVA_HOME/bin
export CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
export JAVA_HOME JAVA_BIN PATH CLASSPATH

环境变量立即生效

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source /etc/profile

查看Java版本号

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java -version

输出结果

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java version "1.8.0_141"
Java(TM) SE Runtime Environment (build 1.8.0_141-b15)
Java HotSpot(TM) 64-Bit Server VM (build 25.141-b15, mixed mode)