Questions about managing the UNIX users, groups and permissions.

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0
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1answer
5 views

Changing the permission of utmp and wtmp

I would like to change the permission of /var/log/wtmp and /var/run/utmp to 660 so that users cannot gain more info about the system (in this case, the logged in users). Does this have any negative ...
1
vote
2answers
27 views

How are the various ulimit values for a process set?

How are the various ulimit values for a process set? I am especially interested in the number of open file descriptors. How is that set for a given process? If it is based on the user who started the ...
1
vote
1answer
23 views

New user home directory not recognized / accepted upon login

I can't log in to my home directory after user creation: I reinstalled my system fresh (Ubuntu 14.04.3). Created an admin user. Added my main user with adduser me. I get feedback along the lines: ...
29
votes
1answer
585 views

Restore man user

For some dislexic reason (or haven't slept enough) I typed deluser man instead of the more common man deluser ... as you can imagine, I just deleted man user! Never happened before... How can I ...
1
vote
1answer
31 views

What is Ubuntu's automatic UID generation behavior?

I'm interested in the case where a new user is generated and no UID is explicitly given, leaving Ubuntu to automatically assign a UID. I know that by default Ubuntu will generate a UID above 1000, ...
-1
votes
1answer
62 views

How do I install a software as admin for the standard user to use?

Background: I installed Ubuntu 14.04.2 LTS and would like to install and use Aptana (and Java). Google pointed me to the guide how to do this and i successfully did this under the initial Ubuntu ...
0
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0answers
14 views

Log In failure with different user accounts

My Ubuntu 14.04 is partitioned with administrator and guest user account. Whenever i log in with the administrator and inputs the correct password, there is a dialogue box which says, "System Program ...
1
vote
2answers
62 views

How do I restrict a specified SSH user to connect only from one IP or hostname?

I have a monitoring server that requires the SSH connection details of a non-sudo user account of each box it monitors. Is there a way that I can configure a specific user account such that it can ...
0
votes
0answers
15 views

How To Hide Drive From User Account In Ubuntu 14.04LTS

I am new to Linux and this is my very first question here. I have installed Ubuntu 14.04.2 LTS. I have three HDD, in one Ubuntu reside. I have created two user account in Ubuntu. I want to hide one ...
0
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0answers
15 views

How do I add an existing ubuntu user to a new domain?

Our organization is making some changes in their security model and they have created a domain server with which each machine would be linked. For this, they have created a new user on my laptop which ...
1
vote
2answers
150 views

How to use sudo from a standard user?

If I try using sudo as a non-privileged user, I get a message that the user is not in the sudoers file. I know the Administrator password, but I do not know, how to use it from a non-privileged ...
0
votes
1answer
35 views

How to add a member to my group with a permission to change my files?

Sometimes I use my CPU as a root user, but mostly as a non-privileged user. As a non-privileged user I also need to change files created by the root user.
0
votes
1answer
51 views

Allowing other users to use wine

I am using ubuntu 15.04. I have installed wine in the superuser account so that I can use MS office 2010. But I can't use it when I login the other normal user account. Is is possible to set the ...
0
votes
6answers
268 views

Import users from CSV file

Is it possible to import users by using CSV file? or something like a LDAP connection to import all users?
0
votes
1answer
125 views

How to hide / remove “postgres” user in Ubuntu 14.04?

I recently installed postgresql. (I know very little about it, but may try it out at some point.) I noticed that a user named postgres (which I do not recall creating manually) is now listed both on ...
0
votes
1answer
78 views

Unable to create and delete an user account in the PC

When I try to create a new user account with command sudo adduser test-ser, I receive this error: sudo adduser test-user Adding user test-user ... Adding new group test-user (1069) ... Adding ...
2
votes
1answer
143 views

How to make a batch file add users to groups?

I need help with a GCSE project, I'm stuck on the last question. It asks for a bash script to create users, and then assign them to groups. I've already made the script add new users, but I'm unsure ...
0
votes
2answers
29 views

Administrators can change passwords of other administrators

I seems that a user set as an "Administrator" can change passwords of not only "Standard" users, but also other administrators. Is there a way to make it so that administrators (there are multiple on ...
0
votes
2answers
69 views

how to delete a user from ubuntu with the same uid of myuser

There is an option to have more than one user on your linux box and use them for different task. So, basically, I used it sometime to have different instance of application for different projects. For ...
-3
votes
1answer
133 views

How can I edit the sudoers file since visudo command doesn't work properly [duplicate]

i tried to edit the etc/sudoers ,while trying to add myself to the sudoers file,but I'm unable to edit it. As I entered the command visudo the following came as output $ visudo visudo: ...
0
votes
2answers
41 views

Is there a command to see all of a user's settings similar to the information displayed in the GUI?

I'm kinda a newbie to ubuntu (only been using it for about 6 months) and I love it! I have been trying to get used to the terminal interface and I use it for a lot of things relating to securing my ...
2
votes
2answers
123 views

How can I find whether I am a sudo user or not [duplicate]

I am asked for sudo password frequently while entering sudo commands in the terminal, but I can't remember whether I am a sudo user or not. Similarly I don't know any superuser do password. I am ...
0
votes
1answer
53 views

What is the default password for root? [duplicate]

My account became administrator by default, but then I changed it to standard. From that instant, I'm asked for the root password to upgrade software, for authentication and also to edit user ...
0
votes
1answer
30 views

Dynamically set user groups for directories and files on a directory

I have made some vhosts which resides on my home folder, and i have given the group access to www-data user. This way the project (a web system) renders on the browser. This is a symfony based ...
1
vote
1answer
55 views

OSSEC user accounts disabled

I have recently installed OSSEC (2.8.1), and during the installation I noticed that it created some extra user accounts. But when viewing those user accounts in my System Settings > User Accounts ...
1
vote
2answers
192 views

Simplest way to set up new user with SSH access on remote host, given root access

I am writing a tutorial on setting up Ceph the hard way, shell all the way. I am not happy with the number of ssh commands it takes to connect to a remote host as root, create new user, then scp keys ...
1
vote
3answers
136 views

How to hide administrator account or root in Login screen? [duplicate]

I used Ubuntu 12.04 and I want to only user account appear on the Login screen without guest and administrator account. My administrator account cannot view to everybody when their Login. ...
0
votes
1answer
50 views

How to change permission to the users on ubuntu 12.04?

How to change permission to the users to restrict their accessibility? I want to cannot see or cannot access the System Files, Devices and Network in home folder? I used ubuntu 12.04 Thanks, Jerrick ...
0
votes
0answers
81 views

Restrict user with access home directory only on Ubuntu 12.04

I want to restrict the employees(users) using the computers in this company. How can I restrict user to their home directory to cannot see or use their the Devices, File System and Network on Ubuntu ...
0
votes
0answers
34 views

SFTP master Account permissions

I've been testing some different sftp configurations. The purpose is for patients to download their records. here's what I've done so far for client accounts, their directories and permissions... ...
1
vote
4answers
105 views

Disable a drive for a specific user

I've just made a new user account for a friend of mine. But I don't want him to have access to my data drive ( it's not the drive where ubuntu is installed on but just a data drive ). How can I ...
0
votes
0answers
45 views

Can't Delete User

Some months ago I created user named 'SNORT_IDS' for some reason. Now i am not able to remove that user from log-in panel of ubuntu. I've tried using, userdel SNORT_IDS It tells user doesn't ...
1
vote
0answers
49 views

User Permission - Only installing from Ubuntu Software Centre

My father in law's 14 month old Dell Computer's hard drive just crapped out, I replaced it with a new hard drive and since Dell won't send him a product key for the windows 8 that he purchased them I ...
0
votes
0answers
66 views

Create user, limit access to one directory, allow ftp access

I know there are various similar answers to this, but I can not figure it out. I want to do the following: Create a user Limit the users access to a directory in /home/s/dir User can write and read ...
0
votes
1answer
124 views

Remove a domain user account from local workstation, not from AD Domain

I have an AD Domain run by Samba4 and have successfully joined Ubuntu workstations to that domain and able to add users and log into the workstation with domain accounts. Now, I am needing to remove ...
9
votes
1answer
521 views

In which directories can “nobody” user write?

In which directories can the nobody user write in a standard, out-of-the-box Ubuntu distribution? I already know about /tmp which is drwxrwxrwt, but are there any other places by default where any ...
1
vote
0answers
132 views

How can I login into a domain user account or login as other user in Kubuntu?

I do have a kubuntu box connected to our Windows AD DC, and now i want to login one domain user in my AD to my kubuntu box but I cannot find a way to log as other user in the login screen. I tried to ...
0
votes
0answers
56 views

Gnome-User-Group manager in xfce is read only

I installed xfce4, it works fine. When launching an application from the menu or icon from desktop it has default user rights. Some tools, like the gnome-user-manger and synaptic, needs root rights ...
1
vote
0answers
44 views

New System account created automatically [closed]

This is weird. Last night, I started to download a movie from a torrent site, and I fell asleep. When I woke up, the download was finished and There is another user account created in my system named ...
0
votes
1answer
66 views

How to make postgresql user access file system?

I am trying Postgresql for learning. I installed that from repository. by default user named postgres had created. I want to know that how can I make this user access files in the disk? I tried ...
0
votes
0answers
53 views

adding and deleting users problem

I have a problem with users this problem is that I can't add or delete them. When I try to add or delete them I have those logs: I searched it on the internet and I found that these problems are ...
0
votes
0answers
63 views

How do I map webmin users to system users? Can webmin user use as a linux user?

How do I convert the webmin user(for example, admin) to linux user, with entries in /etc/passwd or /etc/shadow? I am trying to map webmin users to linux users for login. Webmin user has same access ...
17
votes
1answer
689 views

“Admin” user automatically has sudo privileges

I added a user named "admin" to my Ubuntu 14.04LTS server, using adduser. I'm used to having to add a user to the /etc/sudoers file when adding a new user that needs sudo privileges, but this time I ...
0
votes
1answer
69 views

How to create users having different access privileges?

I want to create 3 users. First user have only the read only permission, that is this user can read all file but can not write, delete and edit file? The second user is execute only user can not see ...
1
vote
1answer
129 views

Can the root user change the owner of a file that he doesn't own?

My web server uses the user www-data to access/change files. This causes permission issues for php file upload etc. for files owned by root (or by any other user). I'd like to use the 755/644 ...
-1
votes
1answer
47 views

I can't create a group for my users how do i do it?

How do i create a group for users i have already created on Ubuntu? I have tried several things but it won't work.
0
votes
0answers
336 views

DB2 Express-C Administration Server installation error

It's my first time trying out DB2 but I ran into a problem when I tried reinstalling V10.5 of DB2 Express-C on Ubuntu 14.04 (had to install then uninstall). It installed smoothly the first time, but ...
1
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0answers
116 views

How to change root directory for sftp user in ubuntu

Hi I would like to allow a client access to the server via filezilla with SFTP. I have the username, home directory and group set up. This currently brings them to their home directory with ...
2
votes
1answer
711 views

Not able to create user on Ubuntu 14.04 (32 bit)

I'm sorry this post is so long, but I wanted to make sure that all the stuff that might be relevant was readily available. I've been trying to create a new user account on my laptop, and, even though ...
0
votes
1answer
137 views

Add user with users-admin

I can't seem to get the users-admin command to work properly under Ubuntu 14.04.1 LTS. When I open it, everything looks fine, but pressing the Add button does nothing, no reaction at all. At a ...