Displaying the MAC address of a Switchport in CLI

[DTNappo]

How do I display a MAC Address on a port in CLI - Currently have OS 7.4.2.  This should be very simple but cannot find any documentation.   Also, in the GUI, how do I clear the MAC and IP info when a new device is plugged into the port.  It shows the old MAC and IP even if I bounce the port.

[Nolman]

In order to view the MAC address connected to a specific port of a FortiSwitch managed by a FortiGate (FortiLink), first apply a filter, then apply the show. 

Create filter: 
diagnose switch-controller mac-cache filter intf-name [port]

Show MACs: 
diagnose switch-controller mac-cache show

Clear filter: 
diagnose switch-controller mac-cache filter clear