Shell Programming and Scripting

is it possible to come up with a list of files that are modified before a certain number of hours only using the grep command?

ex. list files that were modified less than 10 hours ago

i've only managed to list files that were created on the same day, i can't seem to figure out how to work the time.

Code:

ls -ul | grep `date +%Y-%m-%d`

why not find, when it can do the job very easily ?

Code:

find . -mmin -60

find files which got accessed within last 1 hour ...

it's an assignment, i can't use any other commands, and i can't write a script for it, it must be done through the command line.

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