User groups are easy, right? A user is either a member or they are not.
Once you start thinking about the details and want or need to automate some of the aspects of user and group management on macOS, there is a lot of devil in those details.
User Membership
You can easily list all groups a given user is a member of. The
id command will show all the groups the current user is a member of. id -Gn will list just the groups. Add a username to the id command to see the information for a different user. The groups command does the same as id -Gn .
You can also run a command to check if a given user is a member of a group:
Jan 11, 2018 A security group is really just a collection of user accounts. Rights and permissions are assigned to a group, and then those rights and permissions are granted to any account that’s a member of the group. Group membership can determine a user’s access to files, folders, and even system settings. Here’s how you can find out what groups a Windows user account belongs to.
A Macintosh User Group (MUG) is a users' group of people who use Macintosh computers made by Apple Inc. Or other manufacturers and who use the Apple Macintosh operating system (OS). These groups are primarily locally situated and meet regularly to discuss Macintosh computers, the Mac OS, software and peripherals that work with these computers. Some groups focus on the older versions of Mac OS. Jul 05, 2016 How to List All User Accounts on a Mac from Command Line. Open the Terminal if you haven’t done so already, either on the local machine you want to list user accounts for, or by connecting to a remote Mac you’d like to see the user accounts on. We’ll then use the ‘dscl’ command, which works in all versions of Mac OS X system software.
Group Membership
So far, so good.
A user is a member of a group when one of these applies:
Mac Os X List Groups For User Windows 7
Note: you should not attempt to manipulate the
GroupMembers or GroupMembership attributes directly. Use the dseditgroup -o edit https://onestopever208.weebly.com/blog/eos-utility-2104-updater-for-mac-os-x. command to manage group membership instead. dseditgroup syntax is weird, but it is a really useful tool. Study its man page.
Listing Group Members
Sometimes (mainly for security audits) you need to list all the members of a group. With the above information, it is easy enough to build a script that checks the
PrimaryGroupID , the GroupMembership attribute and the recursively loops through the NestedGroups .
This is confused by the fact that
PrimaryGroupID stores the numeric User ID, GroupMembership uses the shortname and NestedGroups uses UUIDs. Nevertheless, you can sort through it.
I have written exactly such a script here:
View the code on Gist.
In most cases this script will work fine. But, (and you knew there would be a “but”) macOS has a very nasty wrench to throw in our wheels.
Calculated Groups
There are a few groups on macOS, that have neither
GroupMembers , GroupMembership , nor NestedGroups , but still have members. This is because the system calculates membership dynamically. This is similar to Smart Playlists in iTunes, Smart Folders in Finder, or Smart Groups in Jamf Pro.
You can list all calculated groups on macOS with:
The most interesting calculated groups are
everyone , localaccounts , and netaccounts .
These groups can be very useful in certain environments. For example in a DEP setup you could add
localaccounts or everyone to the _lpadmin and _developer groups, before the user has even created their standard account. That way any user created on that Mac will can manage printers and use the developer tools.
However, since these groups are calculated magically, a script cannot list all the members of any of these groups. (My script above will show a warning, when it encounters one of these groups.)
While it would probably not be wise to nest the
everybody group in the admin group, a malicious user could do that and hide from detection with the above script (or similar methods).
Other Solution
Instead of recursively listing all users, we can loop through all user accounts and check their member status with
dseditgroup -checkmember . This script is actually much simpler and dseditgroup can deal with calculated groups.
View the code on Gist.
New Os For Mac
This works well enough when run against all local users.
I strongly recommend against running this for all users in a large directory infrastructure. It’ll be very slow and generate a lot of requests to the directory server. Because of this the script above runs only on the local directory node by default.
Mac Os Versions ListSummary
![]() Mac Os X List Groups For User 2017
Each user on your system has an entry in the list on your MacBook’s Users & Groups pane. The panes and settings here change, depending on the access level of the selected account.
The settings on the Users & Groups pane can include
Mac Os List Names
If you choose, you can log in automatically as the selected user by clicking the Automatically Login <Username> pop-up menu and choosing your account. (Definitely not a secure feature — especially for MacBook owners — but convenient as all get-out.)
Macos List Groups For User
The Login Options pane also allows you to enable or disable Fast User Switching, and you can prevent anyone from restarting or shutting down the Mac from the Login screen by disabling the Show the Sleep, Restart, and Shut Down Buttons check box.
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