为保存的比较文件选择一个位置。

Select the location for the comparison file to be saved.

youdao

通过ls命令比较文件的大小，您可以看到备份被用于替换当前的数据库。

Comparing the file sizes with the ls command, you see that the backup was used to replace the current database.

youdao

Additionnal断言：支持在不需要访问文件系统的情况下比较文件和目录。

Additionnal Asserts: Support for comparing file paths or directories without accessing the file system.

youdao

So among your printout from Wednesday, if you have it, you have a file called math1.c. If you don't have this, the programs are short today, so it should be easy enough to follow along visually, but a PDF and the actual source code is available online for these things.

从你们周三打印出来的资料来看，如果你们手上有的话，你们会看到有个叫做的“math1，c“的文件，如果你们没有资料，那些程序还是比较短的，所以你们应该可以很轻松地,来看这些程序，但是那个PDF文件,和实际的源代码都可以到网上找到,相关的资料。

哈佛公开课 - 计算机科学课程节选