Originally Posted by Babaganoosh

That's kinda true. I didn't really read his post. There's still a simpler way to do this.

Generate a random number between 1-6. Store that along with the date in a flat file. When the script runs, have it choose a number between 1-6. If that = the random number then execute the script.

You'd have to keep track of the numbers already picked for the day as well as increment the date after the script has already run for the day. Make sure the script doesn't execute again if the date in the text file == today.