Ubuntu Please!!

(I just needed help with B as I am already done with A)

Create a crontab entry with the following parameters:

a. Find all files that have a .conf extension and generate a list of them and place it in the /tmp folder called confFiles.txt.

b. The program should check every Monday at 6:00 am and every 1^st, 15^th, and 30^th day of the month at 11:30 PM.