With Linux/Unix, I can use
useradd -G developers vivek to add vivek to the developer group. How can I do the same thing with Mac OS X?
Then, how do I check if vivek is in developers group?
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To add a user to a group:
dseditgroup -o edit -a vivek -t user developers
(Note: you can also do this with
dscl as in @hobs' answer, but you really should both add the user's short name to the GroupMembership list, and also add the user's GeneratedUID to the GroupMembers list.
dseditgroup does both with a single operation.)
To check membership:
dseditgroup -o checkmember -m vivek developers
dsmemberutil checkmembership -U vivek -G developers
To remove a user from a group:
dseditgroup -o edit -d vivek -t user developers
(Again, you can do this with
dscl, but need to remove the user from both GroupMembership and GroupMembers.
dseditgroup does both.)
Two ways: From the terminal
Everything here should be done on the command line First start dscl like this:
$ dscl localhost
Then cd to the Groups node:
You can see all the groups using ls. Once you have found the group you are interested in, you can view all its properties with cat groupname. When you are ready to add a user (username) to the group (groupname), use the following command:
append groupname GroupMembership username
If you want to remove a member from a group, use the following command (be careful!):
delete groupname GroupMembership username
When you are finished with your changes, exit dscl by typing exit.
Choose Apple menu > System Preferences, and then click Accounts. Open Accounts preferences Step 2
If the preferences pane is locked, click the lock icon and enter an administrator name and password. Step 3
Click the Add (+) button, located below the list of accounts, to create a new account. Step 4
Select a Group from the New Account pop-up menu. Step 5
Enter a name for the group, and then click Create Group. Step 6
Select the checkboxes by the accounts to be members in the group.