The time-shifting interface doesn’t look very intuitive. What’s up with that?
The way you access files in the past is with the ‘@’ token followed by an epoch number. We fondly refer to the ‘@’ token as “The Flux Capacitor” for various, non-trademark-infringing reasons. This token is customizable. The epoch number is the number of seconds passed since The Epoch (00:00:00 UTC, January 1, 1970); see the gettimeofday() man page. This may seem a little non-intuitive at first, but we believe any fancier syntax should be supported by the shell, not the file system. This approach is similar to how access and creation time is handled. Take a look at Time-Traveling File Manager if you’re interested in a GUI interface to ext3cow. That being said, we are looking at supporting some common macros in a future version, for example: @yesterday, @lastweek, @lastmonth, etc.
