change MacOs hostname

some MacOs setup commands

# This is your fully qualified hostname, for example myMac.domain.com
sudo scutil --set HostName <new host name>
#Type the following command to change the Bonjour hostname of your Mac:
#This is the name usable on the local network, for example myMac.local.
sudo scutil --set LocalHostName <new host name>
#Optional: If you also want to change the computer name, type the following command:
#This is the user-friendly computer name you see in Finder, for example myMac.
sudo scutil --set ComputerName <new name>
#Flush the DNS cache by typing:
dscacheutil -flushcache
#Restart your Mac