Questions tagged [groups]
243 questions
914
votes
8 answers
How to add existing user to an existing group?
I want to add the Apache user (www-data) to the audio group. I've read the man page for useradd, but I'm not having any luck. I'm running xubuntu 11.10. Here's what I'm doing:
$ sudo useradd -G audio www-data
useradd: user 'www-data' already…
Sparky1
- 13,199
251
votes
8 answers
How do I add a user to the "sudo" group?
In /etc/sudoers I see this:
# Allow members of group sudo to execute any command after they have
# provided their password
# (Note that later entries override this, so you might need to move
# it further down)
%sudo ALL=(ALL) ALL
So how do I add a…
coffee-grinder
- 4,215
234
votes
2 answers
How can I display all users and groups with a command?
I want to display:
All users and
All groups
in my system using command-line.
users and groups commands display users currently logged in, and groups a user belongs to respectively.
How to display a list of all users and all groups by…
Pandya
- 37,289
77
votes
1 answer
What is a "system" group, as opposed to a normal group?
I need to add a group of users to my system. I read the adduser and addgroup manpages and the question here about "users" and "system users".
I need clarification with groups and system groups, because as far as I know, groups can't login, so the…
useful
- 1,927
- 6
- 26
- 32
65
votes
6 answers
How to add users to vboxusers to enable USB usage
I want to use my flashdrive in Windows XP, which I am currently running in Virtualbox, but when I open up the settings to enable usb usage, I get an error:
Failed to access the USB subsystem.
VirtualBox is not currently allowed to access USB…
GingerHunter797
- 651
47
votes
4 answers
What is the group id of this group name?
How to get the group ID GID giving the group name.
The output would be for example:
Group adm with GID=4
Maythux
- 87,123
43
votes
1 answer
What is the difference between the groups "adm" and "admin"
What is the group "adm" and for what it's use? and what are the differences form the group "admin"?
Maythux
- 87,123
32
votes
3 answers
After adding a group, logout+login is not enough in 18.04?
In ubuntu 18.04 with default desktop, behaviour of logout/login has changed:
Previously on an Ubuntu system, when I find that I need to add my user id to some group, it was sufficient to
sudo adduser ludwig docker # adds me to group docker
and…
Ludwig Schulze
- 826
26
votes
2 answers
What is the difference between primary group and secondary group in Ubuntu?
What is the difference between primary group and secondary group in Ubuntu?
Nematullah Tanin
- 261
18
votes
2 answers
What is the purpose of the group named "users"?
On my Ubuntu a group "users" with id 100 exists. But it has no members at all.
My questions are:
What is the purpose of this group?
Should each user of the system become a member of this group?
Mathias
- 205
18
votes
3 answers
How do I find files with no group permissions?
I just want to know how I can find, in a folder, the files that have no group user permission (no read/write/execute) at all, using the terminal.
John Baptist
- 351
17
votes
3 answers
Can't access directory I am a group member of
On my web server I have a directory ‘www’ that has the permission drwxrwxr-- and user:group root:www-data so that Apache can access it.
Now I have added my account to the group www-data with
sudo usermod -g www-data myuser
and if I do groups then…
dazz
- 346
15
votes
2 answers
Difference between adduser and usermod -G -a
What is the difference between
adduser user_name group_name
and
usermod -G -a user_name group_name
At first glance they seems to do the same thing : add a user to a group.
snoob dogg
- 258
- 1
- 2
- 10
14
votes
2 answers
Output of getent group
Similar to This question, but different result set, can anyone help me with the output of getent group?
It's something like this:
groupname:x:0:
just not sure what the x:0: signifies?
twitchd8
- 147
14
votes
1 answer
Why is my GID environment variable empty?
I try echo $GID but get nothing. However, I can get 1000 by using id -g, what's the differences between them ?
id -u => 1000
id -g => 1000
echo $UID => 1000
echo $GID =>
The output of id:
uid=1000(user) gid=1000(user)…
Corey
- 297