根据文件系统所属的磁盘分区，此流程将对该分区的所有目录返回相同的磁盘使用量统计数据(以字节为单位)。

Based on the disk partition to which the file system belongs, this routine returns the same disk usage statistics in bytes for all directories in that partition.

youdao

这个特性是以表空间为单位启用或禁用的，从而可以有效地使 DB2 中的某些数据使用文件缓存，而另一些数据则绕过文件缓存。

This feature is available on a tablespace-by-tablespace basis, effectively allowing some data in DB2 to use file caching and other data to bypass it.

youdao

得到的值是文件的大小，单位为该系统中的缺省块大小，与df所使用的单位相同。

The value given is the size of the file in the default block size for that system, just as that used with df.

youdao