这里，用户输入Control - d(文件结束指示符)前输入的所有内容都成为command的输入。

Here, whatever the user types until a Control-D (end of file indicator) becomes the command's input.

youdao

这里，用户输入Control - d(文件结束指示符)前输入的所有内容都成为command的输入。

Here, whatever the user types until a Control-D (end of file indicator) becomes the command's input.

youdao