group

I don't acquire supplemental groups at login I have ssh access to a fresh installation of Ubuntu 22.04 on a cloud VM. My password entry is fish:x:1001:100::/home/fish:/bin/bash and /etc/group contains users:x:100: sudo:x:27:gsluser,fish When I log in, I get sh rather than bash and I’m not automatically in the sudo group, although groups says that I …

What system calls create users and groups? Whenever I search for how to create groups, examples always point to chapter 8 (i.e. shell) commands. When I look through lists of common sys calls (i.e. the ones listed in the Wikipedia page), I see commands to set and get group IDs, but no specifics on how …

Allow user in group to access shared folder from another user There are two accounts user1 and user2. I wish to share and give rwx access to my user1 /home/user1/Documents/ folder with user2. To do this, I have made a new group called sharedDocs. These are the commands I executed in order: groupadd sharedDocs usermod …

output a column group by another columns in shell Thanks in advance! I have a file with 3 columns like this: serv1 red group1 serv1 black group1 serv1 orange group1 serv1 red group2 serv1 orange group2 serv1 red group3 serv1 black group3 serv1 orange group3 serv2 orange group1 serv2 red group2 serv2 orange group2 serv2 …

Does Linux have well-known groups and users, other than root? Windows have lots of well-known groups and users that all installations have by default. For example, the Administrator user is a member of the Administrators group, or any user is a member of the Users group, etc. Does Linux have such common groups/users other than …

Does chown command allow to set group different from user group? It may be a stupid question, but I don’t understand a detail about the command chown. I haven’t found any explanation for this detail yet, maybe because it’s so obvious to everyone. When you change a file ownership, you can set a user parameter …

How do I have two group owners I have a file where I want there to be not one but two groups who can have extra privileges to access it. But when I chown or chgrp it to a group it always erases the previous group. How do I add a group owner without deleting …

Ext4 "unused inodes" "free inodes" diffrence? When I use the dumpe2fs command to look at the Block Group of the ext4 filesystem, I see "free inodes" and "unused inodes". I want to know the difference between them ? Why do they have different values in Group 0 ? Group 0: (Blocks 0-32767) [ITABLE_ZEROED] Checksum 0xd1a1, …

adding a user to an existing group in linux I am wondering if there is a difference between using usermod or groupmod to add a user to another existing group. Example: we have a supplementary group named artists and want to add romeo to this group. usermod -G artists romeo groupmod -U romeo artists I …

How to get list of users with a given group as primary group With getent group xyz I get a list of users who are members of xyz with xyz either as a primary group or as secondary group. How do I get a list of just those users who have xyz as their primary …

Group not listed in groups command On Ubuntu 22.04, I’ve installed docker, added myself to the docker group with sudo usermod -a -G docker user, and logged out/in. However, I still get "permission denied" errors when running docker commands. In /etc/group, I see docker:x:133:user but docker doesn’t show up when I run groups. Asked By: …

What are the differences between lgroupadd and groupadd? lgroupadd is provided by libuser. groupadd is provided by shadow. Both create user groups. I couldn’t find the difference between the two on google. Asked By: Lee Bruce || Source Compare man lgroupadd and man groupadd: lgroupadd only has a small number of configuration options, to choose …

How to set up up group specific folders in linux I’m trying to create a segregated workspace for multiple groups, each group member should only be able to read, write and view their associated shared folder. I’ve created 2 user groups groupATeam and groupBTeam to handle the permissions of users. I’ve also assigned the group …

How to limit messages from the wall command to a specific group? The description for the wall command states that it sends a message to all logged in users. However, the man page describes a flag, -g –group, which allows the sender to limit messages to a specified group: -g, –group group Limit printing message …

Is there a similar command like "lid" on Ubuntu? On RHEL, there is a command lid, which lists group users, no matter primary group or secondary group. [root@192 ~]# id user1 uid=1000(user1) gid=1000(user1) groups=1000(user1),1001(g1) [root@192 ~]# id user2 uid=1001(user2) gid=1002(user2) groups=1002(user2),1001(g1) [root@192 ~]# id user3 uid=1002(user3) gid=1001(g1) groups=1001(g1) [root@192 ~]# lid -g g1 user3(uid=1002) user1(uid=1000) …

Copying a file into a directory where I am a member of the directory group I am attempting to copy a file into a directory where my user account is not the directory owner but belongs to a group that is the directory group owner. These are the steps I have taken: Create a group …

With sudo, is it possible to execute a program using a target group which the target user is not in? Please consider a Linux system with a standard installation and configuration of sudo; that is, root can execute all commands, taking the identity of other users, and please consider the following command: sudo -u user1 …

How do I recursively run "chgrp" without changing the group if it matches a specific group? I just copied all the files/subdirectories in my home directory to another user’s home directory. Then I did a recursive chown on his home directory, so that he became the owner of all his files/subdirectories. The last thing I …

Regain sudo access after nuking secondary groups While setting up docker on Ubuntu 20.04 I did sudo usermod -G docker $USER. As noted in related questions here, I missed the -a flag and replaced all secondary groups. However, I didn’t realize this until after I rebooted my machine. This is a single-user work station. I …

different output for groups and groups USERNAME after adding a username to a group I stumble across a weird behaviour today. After adding a user to a new group like so : # gpasswd -a test myuser then connecting to a new bash session, here are the result for groups and groups myuser: myuser@mycomputer$ groups …