How can I free up some disk space? I'm about to run out of disk space, and I know I have a lot of junk on my macbook but I don't know how to find it to figure out how to delete it.

Is there an easy command line way through terminal to list my biggest files on my drive?  Or is there a GUI program that could help me find all the offending huge files that I'm not using?
You can try :


Disk Inventory X (free one)

DaisyDisk (paid one)