本文介绍了Unix find -mtime {一个负值或正值}的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
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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