打开终端输入以下指令：
1 $ mvn -v 2 3 Apache Maven 3.3.9 4 Maven home: /usr/share/maven 5 Java version: 1.8.0_181, vendor: Oracle Corporation 6 Java home: /usr/lib/jvm/java-8-oracle/jre 7 Default locale: zh_CN, platform encoding: UTF-8 8 OS name: "linux", version: "4.4.0-36-generic", arch: "amd64", family: "unix"