Find files modified/created within N days ago

This proved to be useful in cleaning up a compromised site. List all the files created or modified within a certain time frame — in this case we are looking 30 days in the past:

find . -mtime -30 -type f -print

If you want to delete all files created/modified n days ago, you can do something like this:

find . -mtime -30 -type f -exec rm {} \;

Or this:

find . -mtime -30 -type f -print0 | xargs -0 rm