$ sudoExecute a command with superuser privileges.
$ sudo !!Repeat the last command with superuser privileges.$ sudo -u username commandRun a command as another user.$ sudo dscl . -create /Users/new_userCreate a new user.$ sudo dscl . -delete /Users/usernameDelete a user account.$ sudo dseditgroup -o edit -a username -t user adminAdd a user to the admin group.$ sudo dseditgroup -o edit -d username -t user adminRemove a user from the admin group.$ sudo !!Repeat the last command with superuser privileges.$ sudo -u username commandRun a command as another user.$ sudo !!Repeat the last command with superuser privileges.$ sudo -u username commandRun a command as another user.