Ubuntu :: What Will Happen If Deleted All The Default User Groups
Dec 19, 2010
i am considered a power user in windows but in ubuntu ima total noob. in the users settings, manage groups, i see like 100 groups. and thats just annoys me, all i want is to be the admin and everything to work its not rocket science is that so hard for linux? I DO NOT WANT TO BELONG TO A FREAKING GROUP I JUST WANT 1 SIMPLE ADMIN ACCOUNT. someone please explain everything related to this subject. i mean i see stupid groups like 'audio' and 'couchdb'. WTFi dont want these useless groups to exist on my system
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Dec 7, 2010
I am building a livecd, the live user created at boot time is a member of the audio group set in /etc/group. This way works for the livecd but when installed a user must manually add himself to the audio group. How can I set new users to automatically become a member of the audio group? In /etc/default/useradd I can set only one group.
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Aug 27, 2010
I am a beginner of Slackware. I am using Slackware 13.1. I want to know, when I add an user in Slackware, which files and folders will be create in Slackware?
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Sep 28, 2010
What is the difference between creating a "regular" user and creating a "system" user on Linux?
For example:
Code:
adduser john
Code:
adduser --system john
Similarly it seems there are normal groups and system groups. Doing an internet search and reading man pages does not give much information on the whole concept of system and regular user/group.
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Jan 12, 2011
I installed F14, then dropped in my passwd, group, and shadow from F9 w/o backing up
what F14 had done. So now I get some messages about missing users like rtkit
and missing groups.
Is there an easy way to find out what default users and groups F14 would have installed?
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Jan 22, 2011
After finally getting Ubuntu 10.10 PPC up and working on my Mac Cube with low capability graphics, I noticed that when I try to run the "User and Groups" from the Administration menu, the program looks like it is starting but then never actually displays.. It shows up at the bottom of the running programs bar and then disappears. Well after having to completely re-install Ubuntu PPC 10.10 and installing all of the updates, User and group Administration still isn't working.. another app that would let me add my wife to my G4 Cube so she could use it?
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Jan 15, 2009
just getting startedin linux <fedora9> and haveseveral questions. first what bookwould be best to start the learning process? have looked at fedora 9 and enterprise and the newest fedora 10 with enterprise and these seem to be aimed at networking setups which I do not have.also in adding users and groups which I have done I think successfully however when I use the newgrp command and try to access a file I have saved under a group with two members the file does not show in the ls command.
users are jevans in group programmers cevans in group programmers in creating the file I didthe newgrp programmers command and created the filein the cevans spotand changed to jevans and negrp programmers and the filedoes not show.so what do I do here, or is my understaning of this incorrect?
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Dec 28, 2009
Code:
gpasswd -a username -g audio,...
What are the other options?
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Jun 12, 2011
So I just recently installed fresh 13.37 over my 13.1 install. Went multilib, and added myself to the usergroups I thought I might need. But truth is, I don't know what half of these are and I just picked the ones that sounded right. I'm the only user on this computer, although I might possibly maybe add another someone if I have to for some reason.
For my user account, I added myself to:
Code:
bin
disk
mem
kmem
wheel
floppy
mail
news
uucp
man
dialout
audio
video
cdrom
games
mysql
sshd
gdm
shadow
ftp
messagebus
haldaemon
plugdev
power
netdev
scanner
users
console
kismet
vboxusers
Basically, I want my own account to be able to do everything I normally do without too much restriction (use the disc drive, mount hard drives, browse the web, read/send email via Thunderbird, download stuff, etc), but leaving the important stuff to root so that if someone else happens to use the computer under my account, they can't do any damage. Did I select the right groups for this? Should I add or remove any? And what groups should a user have if I just want them able to browse the web, download files, use their /home, run non-root apps, and nothing else?
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Aug 4, 2011
I have Ubuntu 10.04.2 (Linux 2.6.32-33-server on x86_64) with OpenLDAP 2.4.21 and Webmin1.550. I converted my ldap database from another system with the older style schema (OpenLDAP 2.3.3 with slightly older Webmin version 1.480) and no longer use slapd.conf, but the newer slapd.d format.
It all works fine except for one thing. When I add a new user, it lets me type in the additional LDAP fields:
But when I click the Create button, all the fields get jumbled together in the Title/Position box with a diamond question mark delimiting the fields:
Modifying existing users (which have the Additional fields displaying correctly) also has the same result - it moves the fields all into the one Title/Position box with the diamond shapes with question marks inside between each entry. Is it a problem with my schema files? I tried reverting to the older shema files and slapd.conf and it still did the same thing on the new system. I am really at a loss.
Here is also the output of ldapsearch for that user (host and samba ids are sanitized):
Previously added users that show the fields properly have "description:" and then the field listed for each Additional LDAP field. Also shouldn't the "title" be visible in plain human readable text here? - it looks like it encrypted it somehow - similar to a password hash. The older system works fine and the fields are all readable and in their proper locations. But the new system just doesn't work right.
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Dec 5, 2010
I've just installed Fedora 14 x64 and had a few problems. I have a GT9800 video card and after installation x wouldn't start untill I added xdriver-vesa nomodeset to the kernel line. Anyway I've just got it to the point where it will actually boot but wasn't asked to create a user - the live cd installation only asked for root user password. So I used useradd to create a user and I'm finally at the desktop. My question now before I go about installing the nvidia driver is can someone confirm which groups my user should belong to. I haven't used Fedora since FC3 so I can't remember.
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Aug 7, 2009
I created a user and I want the particular user in multiple groups. How Should I and after creating the user,If I want to delete that user from a particular group.
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Jun 16, 2011
I've created a set of users using the newusers command. Unfortunatelly ive messed up and added all users to the 1000 group as primary group instead of giving the group argument as null what would add them to a new group. To make things clear:
The entries should be
user:password:::User Name:/home/user:/bin/bash
but I did
user:password::1000:User Name:/home/user:/bin/bash
I need to create the missing groups. A simple fix could be do a for loop creating a group with the name of each user in my file and then adding the users to it. Are there any dangers of doing it? What impact could this change have? Are there any safer ways?
A combination of the following commands:
Quote:
Add users to a group with the gpasswd command:
# gpasswd -a [user] [group]
To delete existing groups:
# groupdel [group]
To remove users from a group:
# gpasswd -d [user] [group]
If the user is currently logged in, he/she must log out and in again for the change to have effect.
Quote:
for i in (names)
do groupadd $i
gpasswd -a $i $i
Assuming I've created all users in group 1000 I could remove them from it with
Quote:
# gpasswd -d [user] [group]
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Jan 29, 2010
What's the single command to add these groups to user account?
Code:
users floppy audio video cdrom plugdev power netdev
Suppose user account "myuser" is already created with only "users" group.
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May 7, 2010
I recently ran into a situation where the ftp user account suddenly could not login. I used the User and Groups system tool to check the user account and reset the password. I then attempted to use ftp and login with the new password and still could not. I then went to check the permissions on the folder and found that the system partition was full, so using gpartd I was able to resize the system partition.
However this still did not fix the ftp login problem. When I opened the User and Groups tool again, all users,including my main account, except root are no longer displayed and all groups are not showing. If I try to add the original ftpuser account I get the message that the user already exists. And my main account works for login still. If I add a new user, it is not displayed in the list either.
If I do a cat /etc/passwd I see all the users listed including the new one I created and cat /etc/group displays all the groups and everything looks like the users are still associated with the correct groups. I can use passwd to change the account password without error and I can use adduser to add another user. Howerver no users are listed in the User and Groups tool and users still can not login to ftp. I can reinstall proftp if needed but I would like to be able to use the User and Groups tool to administer users again.
PS: Forgot that just before encountering the ftp login problem, Update Manager and some updates listed that I attempted to install but got an error and didn't have time to check why. Now I know that the partition was full.
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May 25, 2010
i wonder, why nobody has written about it ...
How can i grant permission for files to specific user or specific group ??
Updated:
We have 3 groups: "g12" ("u1" and "u2), "g34" and "g56".
"g12" should only read the file.
"g34" should write and read it.
"g56" should have all permissions (rwx).
And others should not access the file at all.
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Jan 17, 2010
Slackware 13 64 bit Hp Photosmart c4280 USB (All-in-one)
- Printer successfully configured using CUPS
- Scanner only works when I am Root.
- When trying to access scanner as user it says there is no scanner attached.
What should be the groups for this user in order to access the scanner? Actually, they are: haldaemon, disk, audio, video, cdrom, plugdev, power, scanner, lp. Below are the outputs for sane-find-scanner (as both root and user), although, since the scanner works well under root, I am almost sure it is a problem with setting permissions and groups.
Quote:
# sane-find-scanner
# sane-find-scanner will now attempt to detect your scanner. If the
# result is different from what you expected, first make sure your
# scanner is powered up and properly connected to your computer.
[code]....
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Jan 4, 2010
I deleted the top panel, how can I restore it to default.
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May 18, 2010
accidently deleated ubuntu lucid default theme,and lost the default user logon,it's now flat and gray.how to get it back?i still have the background, not the user logon
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Feb 4, 2011
I already know of a work around to fix this problem, but I guess my question is why is this not working as expected? I am using a Windows Server 2008 R2 Active Directory for authentication.
I have run auth-client-config for the ldap profile and pam-auth-update. When running getent passwd, I get a list of both the local users and the users in the active directory (with populated information in the Unix schema extension). When running getent group I get a list of both the local groups and the groups in the active directory (with populated information in the Unix schema extension).
Interestingly enough, though, when I run su DOMAINUSER, after the prompt for the password I get an authentication error. In /var/log/auth.log I can see an entry with pam_ldap: missing "host" in file "/etc/ldap.conf". The SRV records in the DNS servers resolve correctly. I've checked this with nslookup and I have seen the records within my zone file. Obviously if the ldap.conf file is working with getent and the ldap server is resolving from the SRV records, it is working fine.
The interesting part is that the Windows Server 2008 R2 AD machine shows in the event viewer that there was a successful authentication, yet the Ubuntu box says no. When I add the host within the ldap.conf file, everything works...getent and the actual authentication, either initial login or su.
[Code]...
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Oct 12, 2010
I am currently trying to set up a Samba domain server. In the Samba-HOWTO-Collection I found an
example file.(Point 3.3.3.1) In the explanations of the example below, the author says I need to map UNIX Groups to NT Groups. He writes a shell-script of how one could do it, but when I copy it and then execute it, I get the error:
Bad option: rid=512
Bad option: rid=513
Bad option: rid=514
The other groups do get mapped, just the Domain Admins, Domain Users and Domain Guests dont. This is the shell from the HOWTO:
#!/bin/bash
#### Shell-Skript f ̈r sp ̈tere Verwendung aufbewahren
net groupmap modify ntgroup="Domain Admins" unixgroup=ntadmins rid=512
net groupmap modify ntgroup="Domain Users" unixgroup=users rid=513
net groupmap modify ntgroup="Domain Guests" unixgroup=nobody rid=514
[Code]...
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May 23, 2010
I was playing around with the default panel that has the power icon (wrong lingo maybe) and the network/sound icons, etc.I deleted some items including the power icon and now for the life of me can't find it in the panel applets list in lubuntu.Is there a way to restore the default panel with the settings as when I first installed lubuntu.I also played with some spacings and other settings so would rather just get it back to normal/restore it vs add all the items back on and then play with the spacings again.
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Apr 28, 2010
I am running Fedora 12 with Gnome.I stupidly deleted the default Gnome Panel from my desktop.By the 'default' Gnome panel I basically mean the default one that is installed whenever you first install Fedora 12.
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Jun 8, 2010
So i am at the stage of about to install the basic system and am using a derivation of the package management provided by Matthias S. Benkmann. To this end I am using his useradd and groupadd scripts to update the files:
/etc/passwd
/etc/group
My issue is that when I run the commands(created as part of temporary system when installing coreutils):
Code:
/tools/bin/su linux
#then as user
/tools/bin/groups
(here linux is the name of the user) This only returns the user being in the group named after user but not the additional group of 'install' Also, prior to logging in as user, if I use this command as root:
Code:
/tools/bin/groups linux
linux install This then returns that the user is in the correct groups. Lines from relevant files look like:
Code:
#/etc/passwd
linux:x:10000:10000::/usr/src/build:/bin/bash
#/etc/group
[code].....
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Oct 12, 2010
I accidentally deleted the default icons in the gnome panel on the top right. I tried to get them back from the add to panel. I went through every program I could, but none of the original programs were found. I'm running fedora 13.
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Apr 13, 2011
I have created two additional users and now wanted to delete them. I did so in system / administration / users and group as well es through the terminal. However - when I reboot the computer the users I had deleted seem to be back. They show up on the welcome screen but when I click on them they don't work any more. How can I delete them alltogether?
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Feb 2, 2010
I want to add 50 new users, not on the server yet I want to add them all to group Accounting - with 1 option, not user by user I want to setup a default password for them all, and have it say something like 'You must now change password or no access will be permitted' Any other options I also want to do once, not for each user?
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Dec 21, 2010
I just deleted an account, this is the command used:
#userdel sam1
check:
/home#ls
[code]...
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Aug 9, 2011
I had two accounts. One was an admin and I set the other as an admin as well, but left it without a password since I wanted the new user to enter it themselves. I went into the new admin account and deleted the old, passworded one.
However, this new account doesn't have a password that I explicitly defined on it. How do I change that? The account is the only one and still 'disabled'.
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Feb 13, 2011
I accisentaly deleted my root user on lenny, because of a gamepanel...Do you know how to re-create it?I am logged in SSH with the root user, so i'll try to re-enable it when the work will end in the window.Edit:User now re-created, he doesnt have the root rights
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