So, I understand the difference between the three ideas in the title.

  1. atime -- access time = last time file opened

  2. mtime -- modified time = last time file contents was modified

  3. ctime -- changed time = last time file inode was modified

So, presumably when I type something like

find ~/Documents -name '*.py' -type f -mtime 14

will find all match all files ending with .py which were modified in the last 2 weeks. Nothing shows up...

So I try

find ~/Documents -name '*.py' -type f -atime 1400

which should match anything opened within the last 1400 days (ending with .py and having type file) and still nothing.

Am I misunderstanding the documentation? Does it mean exactly 1400 days, for example?

A relevant post:

find's mtime and ctime options


Yes, -mtime 14 means exactly 14. See the top of that section in the GNU find manual (labelled "TESTS") where it says "Numeric arguments can be specified as [...]":

Numeric arguments can be specified as

+n     for greater than n,

-n     for less than n,

n      for exactly n.

Note that "less than" means "strictly less than", so -mtime -14 means "last modified at the current time of day, 13 days ago or less" and -mtime +14 means "last modified at the current time of day, 15 days ago or more".


find ~/Documents -name "*.py" -type f -mtime 14 - exactly 14 days ago

find ~/Documents -name "*.py" -type f -mtime +14 - more than 14 days ago

find ~/Documents -name "*.py" -type f -mtime -14 - less than 14 days ago

The rest in your statement seems to be correct.

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