You can determine the free space and usage for entire file systems using df, but this only gives you part of the picture.
使用df，您可以确定整个文件系统的空闲空间和空间使用情况，但这只是描述了部分信息。
2
Or, the following USES df to show the space on a user's home directory.
或者，下面使用df显示了一个用户的home目录的空间信息。
3
The script USES df, extracts only the line you want with grep, and then USES awk to extract the fourth column of data, which is the amount of free space.