And for 10.5, dscl replaces niutil
Adduser for Mac OS X = dscl + niutil + nicl
For Mac OS X 10.5 aka Leopard,
niutil -appendprop . /groups/admin users yourusernamehere will not work any more as even the command line versions of niutil, netinfo etc are gone. Its dscl, baby.
dscl / -append /Groups/admin GroupMembership yourusernamehere to make your username be added to the Admin group.
Man dscl
How to: Add a user from the OS X command line, works with Leopard! has all command options explained in clear English - whenever you'll need to create users, change or add them to groups, change passwords... everything that adduser or niutil would do, dscl does.
For Mac OS X 10.5 aka Leopard,
niutil -appendprop . /groups/admin users yourusernamehere will not work any more as even the command line versions of niutil, netinfo etc are gone. Its dscl, baby.
dscl / -append /Groups/admin GroupMembership yourusernamehere to make your username be added to the Admin group.
Man dscl
How to: Add a user from the OS X command line, works with Leopard! has all command options explained in clear English - whenever you'll need to create users, change or add them to groups, change passwords... everything that adduser or niutil would do, dscl does.