Comment by js2

Some that were missed:

diskutil: modify, verify and repair local disk

hdiutil: manipulate disk images (attach, verify, create, etc)

dscl: Directory Service command line utility (manage users and groups)

scutil: Manage system configuration parameters (useful for checking current DNS configuration and checking reachability to a host).

sysadminctl: It's a secret! No man page. Run without options to get a usage message, but even the usage is apparently incomplete. It's a grab-bag of functionality. I use for adding/removing a temporary build user as part of a CI/CD setup.