你应该学习常用命令的键盘快捷键。

You should learn the keyboard shortcuts for common ___commands.

要启动服务，请在终端中输入相应的命令。

To start the service, type the appropriate ___command into the terminal.

程序未能正确执行该命令，导致了一个错误。

The program failed to execute the ___command properly, causing an error.