How do you defrag a harddrive on an apply macbook?

[PURE REPUBLICAN]

I do not have much space left on my computer how could i make more? How do i defrag the harddrive?

 

[nexteltom17]

Open Control Panel, click on scheduletasks, scroll down to defrag disk. click onfile, then click on run.Note: Defrag will take Sim time to run, so be patient.