The command
find /pth/to/dir -type f -mmin -60 will show you all files inside /path/to/dir and all of its subdirectories which have been modified in the last 60 minutes.
If you want to search for something less recent,
find /path/to/dir -type f -mtime -2 will displayed the files modified in the last 2 days.
The command
find /path/to/dir -type f -mtime -5 ! -mtime -2 will display files modified in the last 5 days, execpt for those modified in the last two days.
The command
find /path/to/dir -type f -mtime -5 -exec ls -al {} \; will find files modified within the last five days, and will do an ls of them, showing may useful properties.