Finding files by date with the Linux find command

Ref: http://blog.arithm.com/2008/12/15/finding-files-by-date-with-the-linux-find-command/

Here’s something I’ve wanted to know how to do since forever.

Use this trick to find files that have been modified since some arbitrary date:
$ touch -d "13 may 2001 17:54:19" date_marker
$ find . -newer date_marker

To find files created before that date, use the cnewer and negation conditions:

$ find . ! -cnewer date_marker

And to delete them, use the built-in “delete” action, eg:

$ find . ! -cnewer date_marker -delete
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