脚本

#安装java
    #!/bin/bash
    if type -p java; then
        echo "Java has been installed."
    else
        #2.Installed Java  , must install wget
        wget -c https://repo.huaweicloud.com/java/jdk/8u151-b12/jdk-8u151-linux-arm64-vfp-hflt.tar.gz;
        tar -zxvf ./jdk-8u151-linux-arm64-vfp-hflt.tar.gz -C /usr/local/;
        mv /usr/local/jdk1.8.0_151  /usr/local/javaJDK;
        #3.Configure environment variables
        echo "JAVA_HOME=/usr/local/javaJDK" >> /etc/profile
        source /etc/profile
        echo "PATH=${JAVA_HOME}/bin:${PATH}
        CLASSPATH=${JAVA_HOME}/jre/lib/ext:${JAVA_HOME}/lib/tools.jar
        export PATH JAVA_HOME CLASSPATH" >> /etc/profile
        source /etc/profile
        echo "setting path successful."
        java -version
        echo "installed successful."
    fi
java -version