是否有方法获得某时间段数据增长量？

jackjons

man find
-mmin n
    File's data was last modified n minutes ago.
-mtime n
    File's data was last modified n*24 hours ago. See the comments for -atime to understand how rounding affects the interpretation of file modification times.
-newer file
    File was modified more recently than file. If file is a symbolic link and the -H option or the -L option is in effect, the modification time of the file it points to is always used.
-amin n
    File was last accessed n minutes ago.
-anewer file
    File was last accessed more recently than file was modified. If file is a symbolic link and the -H option or the -L option is in effect, the access time of the file it points to is always used.
-atime n
    File was last accessed n*24 hours ago. When find figures out how many 24-hour periods ago the file was last accessed, any fractional part is ignored, so to match -atime +1, a file has to have been accessed at least two days ago.
-cmin n
    File's status was last changed n minutes ago.
-cnewer file
    File's status was last changed more recently than file was modified. If file is a symbolic link and the -H option or the -L option is in effect, the status-change time of the file it points to is always used.
-ctime n
    File's status was last changed n*24 hours ago. See the comments for -atime to understand how rounding affects the interpretation of file status change times.