I played around with this one, and what not. In some cases you may have a ton of files in a directory, and for whatever reason you only want specific files from a specific date. This little trick might come in handy. I’ll show via an example.
touch --date "2012-01-01" /tmp/start
find /var/log/apache2 -type f -newer /tmp/start -execdir tar uf jan01_files.tar '{}' +
This little code will find all files in the directory /var/log/apache2 and create a tarball from them. The + is used so a process isn’t spawned from each fiind to update the tarball.