发现-mtime不起作用

Question

我尝试了文章中的所有建议：5个天后删除文件的脚本

当我在没有-mtime参数的情况下运行find时，它会找到我要查找的文件。当我添加-mtime +2时，不会返回任何内容。我知道在我使用find命令查找的目录中有适当日期的文件(S)。

Answer 1

来自man find：

 -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.

 -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.

但也见：

  -daystart
          Measure  times  (for  -amin,  -atime,  -cmin,  -ctime,  -mmin, and -mtime) from the
          beginning of today rather than from 24 hours ago.  This option only  affects  tests
          which appear later on the command line.

总之，使用find -mtime +1查找2天前的文件。