Move files to another directory which are older than a date

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You're almost right. -mtime 365 will be all files that are exactly 365 days old. You want the ones that are 365 days old or more, which means adding a + before the number like this -mtime +365.

You may also be interested in the -maxdepth 1 flag, which prevents you from moving items in sub directories.

If you want to be sure that you are only moving files, not directories, add -type f to the line.

At the end of the line we add \; so that find knows that's the end of the command we are executing.

So the line should be:

find /sourcedirectory -maxdepth 1 -mtime +365 -type f -exec mv "{}" /destination/directory/ \;

To be on the safe side, start by just doing a ls -l instead of mv - that way you can check in advance that you're getting exactly the files you want, before re-running it with mv, like this:

find /sourcedirectory -maxdepth 1 -mtime +365 -type f -exec ls -l {} \;