安装jdk的自动化脚本

#!/bin/bash

init(){
    echo "初始化环境..."
    cd /root
    tar -xvf tools.tar.xz
    echo "解压工具包完成。"
    cd /usr/local
    mkdir tools
    echo "在/usr/local下创建tools目录完成。"
}

install_jdk(){
    echo "开始安装JDK..."
    cd /root
    mv /root/tools/java-1.8.0-openjdk-portable-1.8.0.342.b07-1.portable.jdk.el.x86_64.tar.xz /usr/local/tools
    echo "移动JDK压缩包到/usr/local/tools完成。"
    cd /usr/local/tools
    tar -xvf java-1.8.0-openjdk-portable-1.8.0.342.b07-1.portable.jdk.el.x86_64.tar.xz
    echo "解压JDK完成。"
    mv java-1.8.0-openjdk-portable-1.8.0.342.b07-1.portable.jdk.el.x86_64  openjdk_342
    echo "重命名JDK目录为openjdk_342完成。"

    echo "设置环境变量..."
    echo "export JAVA_HOME=/usr/local/tools/openjdk_342" >> "/etc/profile"
    echo "export PATH=\$JAVA_HOME/bin:\$PATH" >> "/etc/profile"
    echo "export CLASSPATH=.:\$JAVA_HOME/lib/dt.jar:\$JAVA_HOME/lib/tools.jar" >> "/etc/profile"

    source /etc/profile
    echo "环境变量设置完成。"

    java -version
    echo "JDK安装并验证版本完成。"

    source /etc/profile


    echo "请手动执行如下命令：  source /etc/profile"

    read HOSTIP1

    source /etc/profile
}

#init
install_jdk