CentOS7JDK的shell安装脚本

#安装JDK

setupJDK(){

        if [ ! -d '/opt/soft' ];then

                mkdir -p /opt/soft

        fi

        if [ ! -d '/opt/soft/jdk180' ];then

                mkdir -p /opt/soft/jdk180

                tar -zxf jdk-8u111-linux-x64.tar.gz -C /opt/soft/jdk180 --strip-components 1   

                if [ "$JAVA_HOME" == "" ];then

                        echo '#java environment' >> /etc/profile

                        echo 'export JAVA_HOME=/opt/soft/jdk180' >> /etc/profile

                        echo "export CLASSPATH=.:\${JAVA_HOME}/jre/lib/rt.jar:\${JAVA_HOME}/lib/dt.jar:\${JAVA_HOME}/lib/tools.jar" >> /etc/profile

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

                        echo 'setup success!'

                fi

        else

                echo 'Already setup JDK'

        fi

}

setupJDK