Managing OS X users, groups, and access control from the commandline

User info

dscl . read /Users/testing

Group info

dscl . read /Groups/admin

Create a user

sudo dscl . -create /Users/testing

Add a user to the admin group

sudo dseditgroup -o edit -a testing -t user admin

Remove a user from the admin group

sudo dseditgroup -o edit -d testing -t user admin

Delete a user

sudo dscl . -delete /Users/testing