如果您是一个喜欢使用Windows命令提示符的人，那么您可能会对屏幕输出缓冲区为什么有这么大的默认大小感到好奇。你能把它换成更小（甚至更大）的尺寸吗？今天的超级用户问答有答案。

今天的问答环节是由SuperUser提供的，SuperUser是Stack Exchange的一个分支，是一个由社区驱动的问答网站分组。

问题

超级用户读者Jay想知道为什么默认的Windows命令提示符输出缓冲区大小如此之大：

I have been using the Command Prompt in Windows for a while now and just realized that there are several pages worth of empty lines below the text entry prompt. Why is that?

为什么默认的Windows命令提示符输出缓冲区大小这么大？它的大小可以改变吗？

答案

超级用户贡献者Steven和miltonb为我们提供了答案。首先，史蒂文：

The “empty lines” are the rows of screen buffer that have not been filled with output yet. To change the screen buffer size from the default of 300 lines (Microsoft’s chosen default), perform the following steps:

1. Open the Windows Command Prompt
2. Right-click on the application’s icon in the upper left corner of the window
3. Click on Properties in the drop down menu
4. Select the Layout Tab
5. Set the Screen Buffer Size (Height Listing) to 20
6. Click OK

Note: I recommend reverting the buffer size to something larger since 20 lines is not much in the way of displayed output.

接着是米尔顿的回答：

I know that this is not the “why” with regard to your question, but if you want to change the screen buffer size from within a Command Prompt window (or batch file), you can make use of the mode command (mode columns, lines). I regularly use this from within the command prompt:

• mode 200, 300

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