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How can I set the modification time of a file on Mac OS X from the command line?

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up vote 5 down vote accepted

MacOS, and most (all?) Unix-like OSs have a touch command, that lets you modify access + mtimes.

on MacOS:

touch 06011200 file

Will set the mtime of 'file' to June 1st of this year.

GNU's version lets you specify times in a slightly more convenient format:

touch -d yesterday file
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