ncc@ncc-HP-Compaq-dx7518-MT:~$ mvn clean install -DskipTests=true
[INFO] Scanning for projects...
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 0.138 s
[INFO] Finished at: 2017-08-13T10:43:56+08:00
[INFO] Final Memory: 6M/110M
[INFO] ------------------------------------------------------------------------
[ERROR] The goal you specified requires a project to execute but there is no POM in this directory (/home/ncc). Please verify you invoked Maven from the correct directory. -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MissingProjectException
[ERROR] The goal you specified requires a project to execute but there is no POM in this directory (/home/ncc). Please verify you invoked Maven from the correct directory.
您指定的目标需要一个项目来执行，但是这个目录中没有POM(/home/ncc)。请验证您从正确的目录中调用Maven。