Here are few commands for Mac:
Command+C ⇔ Copies selected items
Command+D ⇔ Duplicates the selected item(s)
Command+E ⇔ Ejects the selected volume
Command+F ⇔ Displays the Find dialog
Command+H ⇔ Hides All Finder windows
Command+I ⇔ Shows info for selected item or items
Command+J ⇔ Shows the view options for the active window
Command+K ⇔ Displays the Connect to Server dialog