All users:

$ getent passwd

All groups:

$ getent group

All groups with a specific user:

$ getent group | grep username
Answer from EEAA on serverfault.com
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StrongDM
strongdm.com › blog › security
How to List All Groups in Linux: Complete Command Guide
April 21, 2025 - One of the most common and straightforward ways to list all groups in Linux systems is by leveraging the Linux "list groups" command. However, this isn’t the only way. There are several alternative methods, such as the "getent" command, the ...
Discussions

How can I find out which users are in a group within Linux? - Unix & Linux Stack Exchange
Use getent passwd for user info ... modern Linux configurations. ... If you get "groups: command not found", it is likely you've edited your environmental path for the worse, to reset your path do PATH=$(getconf PATH) ... It works for a particular group if | grep {group} is added and gives the correct answer unlike getent group name_of_group or grep '^group_name_here:' /etc/group ... Instead of cat /etc/passwd, you should use gentent passwd so users in nis/ldap would still be listed... More on unix.stackexchange.com
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How can I list all groups in Linux?
I’m trying to manage user groups on my Linux system and need to see all the groups currently available. I’m not sure which command to use. Can someone guide me on how to list all groups in Linux? Thanks! More on mepis.org
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0
0
August 21, 2024
IOMMU groups not displaying.

You need to both enable the IOMMU kernel module, and enable VT-d/AMD-Vi in your host UEFI settings, e.g.:

https://wiki.archlinux.org/index.php/PCI_passthrough_via_OVMF#Setting_up_IOMMU

More on reddit.com
🌐 r/VFIO
1
2
April 3, 2020
How to list installed packages that belong to a certain group?
sudo pacman -Qg gnome

to list every installed package in the gnome group.
 
Also:

 sudo pacman -Rdd gnome

will remove all packages in the gnome group without removing their dependencies. You'll probably still need to do some manual intervention, and this may leave you with unused packages. Which can be (hopefully) gotten rid of with:

   pacman -Rns $(pacman -Qtdq)
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3
5
March 27, 2017
People also ask

How do I add a user to a group?
Use `usermod -aG groupname username`. See our guide on adding a user to a group.
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linuxize.com
linuxize.com › home › linux commands › how to list groups in linux
How to List Groups in Linux | Linuxize
How do I check what group a file belongs to?
Run `ls -l` to view file details. The fourth column shows the group assigned to each file.
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linuxize.com
linuxize.com › home › linux commands › how to list groups in linux
How to List Groups in Linux | Linuxize
Where are group definitions stored?
Group definitions are stored in `/etc/group`. Each line contains the group name, a password placeholder, the GID, and a comma-separated member list, all separated by colons.
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linuxize.com
linuxize.com › home › linux commands › how to list groups in linux
How to List Groups in Linux | Linuxize
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KodeKloud
kodekloud.com › blog › how-to-list-all-groups-in-linux
How to List All Groups in Linux
November 5, 2025 - Understand what groups are in Linux and how they manage permissions and collaboration. Learn the difference between primary and secondary groups. Explore why groups are essential for user management, resource access, and security. Discover multiple methods to list all groups, from viewing /etc/group to using commands like getent, cut, and awk.
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Linuxize
linuxize.com › home › linux commands › how to list groups in linux
How to List Groups in Linux | Linuxize
May 16, 2026 - Find which groups a user belongs to in Linux using the groups, id, and getent commands. Includes how to list all groups and group members on the system.
Find elsewhere
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Warp
warp.dev › terminus by warp › linux › list users in linux
Linux How To List Users And Groups In Linux | Warp
April 22, 2024 - Learn how to copy directories and their content in Linux using the cp command with options like -r for recursive copying, -i for interactive mode, and -a for preserving attributes. ... Learn how to manually and automatically create and list groups in Linux.
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Arch Linux Forums
bbs.archlinux.org › viewtopic.php
[Solved]How to list groups available / GNU/Linux Discussion / Arch Linux Forums
September 8, 2008 - edit "/etc/group", add your username in front of the group you want to be in. hehe The 'Slackware Way'... Old habits, hard to break. Let me install Slackware on Virtualbox, I miss it. Last edited by kensai (2008-09-08 02:17:40) Follow me in: Identi.ca, Twitter, Google+ Offline · Pages: 1 · ...
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4sysops
4sysops.com › home › articles › list groups in linux
List groups in Linux – 4sysops
July 6, 2024 - Administrators can list groups in Linux by leveraging tools and commands such as groups, id, compgen, and getent.
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Linux Journal
linuxjournal.com › content › how-list-groups-linux-pro
How to List Groups in Linux Like a Pro | Linux Journal
This guide explores everything you need to know about listing groups in Linux, using a variety of tools and techniques to get exactly the information you need.
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ArchWiki
wiki.archlinux.org › title › Users_and_groups
Users and groups - ArchWiki
May 3, 2026 - Broken down, this means: user archie, whose password is in /etc/shadow, whose UID is 1001 and whose primary group is 1003. Archie is their full name and there is a comment associated to their account; their home directory is /home/archie and they are using Bash. The pwck command can be used to verify the integrity of the user database. It can sort the user list by UID at the same time, which can be helpful for comparison: ... Warning Arch Linux defaults of the files are created as pacnew files by new releases of the filesystem package.
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Server Academy
serveracademy.com › blog › linux-list-groups
How to List Linux Groups - Blog - ServerAcademy.com
Introduction to Linux Groups Linux Groups are a fundamental part of managing permissions and organizing users. They're not just a feature for advanced users, bu
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Baeldung
baeldung.com › home › administration › user administration › list all groups in linux
List All Groups in Linux | Baeldung on Linux
March 18, 2024 - The first way to reach our goal is to use the groups command. This command is shipped with the shadow-utils package. Therefore, it’s available on all Linux distros by default. If we don’t give it any arguments, the groups command will list ...
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Mepis
mepis.org › linux
How can I list all groups in Linux? - Linux - Mepis Forum
August 21, 2024 - I’m trying to manage user groups on my Linux system and need to see all the groups currently available. I’m not sure which command to use. Can someone guide me on how to list all groups in Linux? Thanks!
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Red Hat
redhat.com › en › blog › linux-groups
How to create, delete, and modify groups in Linux
November 21, 2025 - The first groups listed in this file are system groups because the distribution maintainers preconfigure them for system activities. Each user may belong to one primary group and any number of secondary groups. When you create a user on Linux using the useradd command, a group with the same ...
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RunCloud
runcloud.io › blog › linux-users-groups-ubuntu
How to List Linux Users and Groups in Ubuntu with Command Line
May 22, 2024 - The cut command in Linux provides simple tools to view and process certain sections of a text file and display its contents to the terminal. You can use the cut command to display only the group names from the /etc/group file: ... As we mentioned before, the getent command displays information from databases configured in /etc/nsswitch.conf file, including the group database which contains group information. To view a list of all the groups present on a Linux computer, you can use the following command:
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Command Linux
commandlinux.com › home › how to › how to linux list all groups
How to Linux List All Groups
March 26, 2026 - For how the underlying permission model works, see the permission bits on files and directories man page. The most direct way to Linux list all groups is reading the /etc/group file.
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Cloud Native Computing Foundation
cncf.io
Cloud Native Computing Foundation
As part of the Linux Foundation, we provide support, oversight and direction for fast-growing, cloud native projects, including Kubernetes, Envoy, and Prometheus. 36 Graduated Projects · 37 Incubating Projects · 153 Sandbox Projects · ALL Projects · All Case Studies · Case Study · How Trip.com Group switched to Cilium For Scalable and Cloud Native Networking ·
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NCBI
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All Resources - Site Guide - NCBI
A portal to information about medical genetics. MedGen includes term lists from multiple sources and organizes them into concept groupings and hierarchies.