Change system names on macOS

From term (or equivalent), copy and paste:

To change your public Host Name (i.e., jeff.oozou.com):

<em>sudo scutil --set HostName "New Name" </em>

To change your local Host Name (i.e., jeff.local):

<em>sudo scutil --set LocalHostName "New Name"</em>

To change your Finder Computer Name (i.e., Jeff's MBP):

<em>sudo scutil --set ComputerName "New Name"</em>

Finally, flush your DNS cache to force refresh:

<em>dscacheutil -flushcache </em>