我可以告诉你答案，但这是因为我作弊了，我之前运行过一次程序。

I can tell you the answer, but that's because I've cheated, run the program before.

youdao

perl -n 命令针对输入文件的每一行运行一次程序。

The perl -n command runs the program once on every line of the input file.

youdao

在您激活一个项目中的代码覆盖率以后，覆盖率统计数据就会在下一次程序启动的时候生成。

After you enable code coverage on a project, coverage statistics will be generated the next time that the application is launched.

youdao