以编程方式确定数据库上的可用空间？

Ok, I have tried searching around for this answer, but with no luck. I have about 50 databases on our SQL Server at work that I have to check almost every day to see if any space can be freed up via shrinking. Our drives tend to fill up a lot, so this is why it is an almost daily task. Ok, I have tried searching around for this answ