Unix find -mtime {一个负值或正值} [英] Unix find -mtime {a negative or postive value}

问题描述

find -mtime -4和find -mtime +4的作用是什么?我无法理解手册页中给出的示例.

What do find -mtime -4 and find -mtime +4 do? I cannot understand the examples given in the man page.

推荐答案

根据手册页:

-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.

-mtime的参数被解释为文件使用期限内的整天数. -mtime +n表示严格大于，-mtime -n表示严格小于.

The argument to -mtime is interpreted as the number of whole days in the age of the file. -mtime +n means strictly greater than, -mtime -n means strictly less than.

对于您来说，

-4表示少于4天.
+4表示超过4天，即4 * 24小时.

-4 meaning less than 4 days.
+4 meaning more than 4 days i.e. 4*24 hours.

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