When does a UNIX directory change its timestamp

user_55597 0
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I used "touch" on a file, updating the file's timestamp but the parent directory's timestamp did not change. However, (as expected) when I created a new file within the parent directory, the directory's timestamp did change.

What criteria do UNIX-like operating systems (specifically AIX) use to determine when to update the timestamp of a directory?

unix-timestamp unix
4 Answers

A Directory is considered as changed when there is any Addition or Deletion of File/Directory inside it. If existing Files/Directories are just getting update than Parent Directory timestamp will not change.

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