find: Time
2.4 Time
========
Each file has three timestamps, which record the last time that certain
operations were performed on the file:
1. access (read the file's contents)
2. change the status (modify the file or its attributes)
3. modify (change the file's contents)
Some systems also provide a timestamp that indicates when a file was
_created_. For example, the UFS2 filesystem under NetBSD-3.1 records
the _birth time_ of each file. This information is also available under
other versions of BSD and some versions of Cygwin. However, even on
systems which support file birth time, files may exist for which this
information was not recorded (for example, UFS1 file systems simply do
not contain this information).
You can search for files whose timestamps are within a certain age
range, or compare them to other timestamps.
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