What happens to the owners after foreclosure?

This is more of a question because I have no idea how it works.  Once the bank foreclose on a property, how long does the owners have to move out and will they be given notice?  I have had this question asked of me and I do not know what the procedures are and estimated how long after the sale will the owners be put out?

I would like to have this information out on AR for the people that might find themselves in that situation.

Please let me know what you know about this part of the foreclosure process.