Anything related with user accounts and user management on Unix-like systems.

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0
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0answers
226 views

How to Sync UNIX Passwords SAMBA4.x?

My current server is running Debian 8 jessie with Samba 4. Its purpose will be to host a simple file sharing server for around 100 people on Windows machines. I already have a collection of UNIX users ...
2
votes
2answers
374 views

Getting Group Names for List of Users

I have a text files with a list of users formatted like: name1 name2 name3 ... Calling the command groups gives the primary group name for that user. ex: bash$ groups name1 name1: ...
1
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2answers
60 views

Adding user to the group owning a folder doesn't give that user access

I have the following folders: drwx------ 4 ccote domain^users 4096 Apr 17 11:18 ccote drwxrwx--- 2 ccote ccote_jponchar_gnicolas 4096 Feb 20 10:58 ccote-jponchar-gnicolas ...
0
votes
1answer
472 views

Restrict user to do SFTP on the www folder owned by www-data group

I would like to create a new user with read/write privileges ONLY in the /var/www/ directory including all sub-directories. The /var/www/ is owned by a group called www-data. Best way to do it I ...
0
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0answers
49 views

Use sudo as login

I've picked up the habit of using sudo and disallowing root logins. In cases, sudo is integrated with GUI configuration tools that require it. Are there any serious efforts to replace login and ...
6
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6answers
22k views

How can I create and grant a normal user with root privileges?

I'm wondering how to create and grant a normal user (for example, named 'sybase') with root privileges? I found useradd, adduser, and passwd to be useful, but are there any other files to modify to ...
1
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0answers
157 views

Shell Script to change user shell

I am writing a script that would be invoked to change user shell. The basic requirement is that once user gets authenticated (e.g: thorough some web application) the script would be invoked to set the ...
0
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2answers
72 views

Setting Up SSH. Just need some understanding

My goal is to build a LAMP server on my arch linux laptop. The main reason is for a web server. The other reason is to learn about how all this administration stuff works. My setup is a laptop with ...
3
votes
2answers
565 views

How to loop over users?

How can I loop over all users in a shell script? I am writing a shell script to perform cleanup on a system. And if the script is run as root, I want to perform the requested actions in all users' ...
19
votes
5answers
1k views

Find files that a user can write, efficiently with minimal process creation

I am root. I would like to know whether a non-root user has write access to some files - thousands of them. How to do it efficiently while avoiding process creation?
0
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1answer
40 views

Killall processes under a user?

So, I know you can pkill -U <uid>, but whenever I've used this, my entire system crashes. Further investigation shows it probably is because I'm not matching anything, so it matches everything? ...
0
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3answers
319 views

How to restrict one user files to another user

On my machine there are user accounts. My question is how to restrict access to ones user files. Meaning no one else can access my files at all. How can I setup this restriction? How many root users ...
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4answers
1k views

How to “cat /etc/shadow” on an HMC?

hscroot@hmcserver:~> grep root /etc/group root:x:0:hscroot,ccfw hscroot@hmcserver:~> hscroot@hmcserver:~> ls -la /etc/shadow -r-------- 1 root shadow 5252 2015-05-06 19:36 /etc/shadow ...
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2answers
3k views

Add a new user steps for Oracle Linux 5

It's been over 10 years since I last used RedHat (which I believe that Oracle Linux came from). So I cannot remember the steps to create a new user, add them to the appropriate groups, set up their ...
2
votes
0answers
85 views

Is it possible to register “virtual” user/group IDs in a Linux system?

Is there a standardized mechanism in Linux which can be used to tie usernames to user IDs without actually creating a system account that can log in? It would seem something like this is possible, ...
21
votes
1answer
6k views

User permissions inside and outside of LXC containers?

I'm running some services inside of Docker LXC containers on my server and I'm beginning to actually do serious things with them. One thing I'm not clear on is how user permissions work inside and ...
3
votes
2answers
3k views

Find files created by a particular user

How would I go about discovering all of the files created by a particular user and display them to the screen? I've started a script that prompts the current user to enter the username of whom they ...
0
votes
1answer
163 views

create a linux user with create files and write permissions without sudo access

I want to create a user in such a way that it can create a file and update the contents of the file. useradd username Now for sudo, we can create username and linking to sudo like below: useradd ...
14
votes
1answer
20k views

Command to list PostgreSQL user accounts?

There are createuser & dropuser commands: createuser - define a new PostgreSQL user account dropuser - remove a PostgreSQL user account Is there a corresponding way to list the user accounts? ...
20
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10answers
6k views

How to create strong passwords in Linux?

I wonder how I can create strong passwords on Linux (for both normal and admin users) and if there are specific programs to do that.
1
vote
1answer
930 views

linux + send wall message only to the specific user

As all know , we can send broadcast message to all users on Linux machine But how to send message only to the specific user? For example #who rodegc pts/1 2015-05-04 04:23 (10.4.72.1) ...
20
votes
5answers
28k views

User-friendly command to list all users on Ubuntu system?

Is there a user-friendly command I can use to list users in a console on an Ubuntu system? When I cat /etc/passwd I get a hard-to-read list of users. It would be nice to see an alphabetized list, ...
2
votes
3answers
1k views

How to limit the number of active logins per user?

How can I limit the number of active logins per user? I've seen this on various servers before, and I was wondering how I could set this up myself. Perhaps in those cases, this was accomplished by ...
9
votes
4answers
1k views

Why are there many accounts? I'm the only user

I am running an Ubuntu 12.04 desktop system. So far I have only installed some programs (I have sudo rights). When I check the list of users on the system, I see a long list, like more than 20 ...
2
votes
1answer
994 views

Difference between adding sudo user with adduser or gpasswd

To add a new sudo user I believe I can call: # to create a new user sudo adduser newusername and to allow this user to use sudo I can do: sudo adduser newusername sudo or sudo gpasswd -a ...
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2answers
194 views

How to show all registred users and their groups with one command?

I was writing a test on basic Unix commands etc, and there was a question show all registered users and their groups with one command. At the same time I can't use getent command.
3
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0answers
28 views

Where do I put my web services? [closed]

I'm administrating my server since a few year but I'm looking for good practice like: What is the best place web service like my wordpress website files? My etherpad-lite instance? Which user shall ...
0
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0answers
29 views

When does the “/mnt/username_home_dir” appear?

The problem I have to solve requires the access to the /mnt/username_home_dir directory, but there is no such directory present, despite me creating a user and auto-creation of his /home/username ...
5
votes
3answers
1k views

How to add a user to a group in FreeBSD

How can I add an existing user to a group in FreeBSD? The command usermod does not work.
7
votes
1answer
649 views

When running 'su - username', pam_group doesn't add additional groups from /etc/security/group.conf but sshd login does?

I am having trouble determining why su doesn't behave as the PAM configuration would imply. In short, using su to become another user should load secondary groups according to PAM configuration, but ...
2
votes
4answers
301 views

Is there a way to show the history of the commands used in the shell?

If my Linux installation has three registered user accounts, is possible to check the history of the commands introduced by each one, and how?
0
votes
1answer
295 views

how to view failed login attempts?

I tried to view failed user login attempts since a specific time. But all methods I found by searching the internet does not work. I am using openSUSE 13.2. journalctl -a --no-pager ...
1
vote
1answer
110 views

Prompting for a password on sudo?

I'm creating users using Puppet. Here's the gist of what I'm doing in Puppet: user { 'ntkay': name => 'ntkay', uid => 10000, home => '/home/ntkay', managehome => true, ...
3
votes
2answers
7k views

smbpasswd failed for new Samba install on fresh Ubuntu 11.04

I've installed Samba on a fresh Ubuntu install. I run the command sudo smbpasswd -a someuser New SMB password: Retype new SMB password: Failed to add entry for user someuser. I've read that you ...
2
votes
0answers
114 views

Catch/diagnose user process being killed - Inexplicably logged out automatically

Context: I'm using bash in Mac OSX Yosemite. Problem: I'm executing a (python) script that I expect to use alot of resources and take a few hours to run, redirecting stdout and stderr to a log file. ...
6
votes
2answers
458 views

rsync doesn't preserve directory ownership even with -a

I use this rsync invocation to backup my home directory: rsync -aARrx --info= --force --delete --info=progress2 -F "$USER_HOME" "$BACKUP_MNTPOINT" rsync man page says that -a implies -g and -o ...
-1
votes
2answers
201 views

Prevent autologin to the admin account

I am a new user of Linux. I have both window 7 and Ubuntu 14.04. For my family and friends, I make Guest account but when I restart my laptop and operates with Windows 7 then options are comes for ...
2
votes
2answers
538 views

Any concerns with using high UID numbers (3000+) on RHEL5+?

The legacy systems has UID numbers up until the low 2000s. In implementing a new user management system, I am looking into options to avoid UID collisions. One option is to just have a list of UIDs ...
1
vote
2answers
548 views

dialout group missing

I have debian8, (Jessie) and I am trying to add a user to the dialout group. Alas, that group doesn't exist. I would prefer not to add the user to the root or sudo group. what should I do? ~$ ...
2
votes
1answer
95 views

Why am I seeing a number as owner / group instead a name?

CentOS 6.x / OpenVZ Recently my VPS provider moved my OpenVZ container to a new server. After that move, I've noticed that files/directories for one of my user accounts show an odd owner / group. ...
-2
votes
1answer
88 views

Print 25 usernames on the system starting in reverse alphabetic order. Print only the usernames,

how to Print 25 usernames on the system starting in reverse alphabetic order. Print only the usernames, nothing else. You should get the information from the /etc/passwd file.? in UNIX Command
-3
votes
2answers
106 views

How to Find the number of password entries that are on the server? in unix [closed]

Find the number of password entries that are on the server? in UNIX
4
votes
2answers
614 views
6
votes
2answers
2k views

How can I start a 'screen' session as non-root user

Is there a way I can open a new 'screen' session on my RHEL box as a non-root user? When I try to open a new screen using the 'screen' command as a non-root user, it fails and I get the following ...
2
votes
2answers
146 views

How does one permissibly access files on non-booted system's user's home folder?

I have a dual boot system with Mint 17.1 and Centos 6.6 I want to access a file in my CentOS user's home directory from Mint. (I cannot boot CentOS right now.) What is a clean/standard method for ...
1
vote
1answer
50 views

Linux Create user with specials login options

Hello i need create some users with special privilegies that will be: A user that can only login with ssh, no local, it can do anything in pc search, find, etc like a normal user but only with ssh. ...
0
votes
1answer
34 views

Is there any way of knowing who [including remote users] can access a paticular file / folder?

In Windows you could enter file properties and see which users have an access to a patricular files. [Including remote users / groups that are part of your domain] In unix when you enter properties ...
1
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1answer
484 views

How to delete remaining files of removed user?

I know deleting user with userdel username can cause information leakage and other security issues (as tutorial book says, administrator should delete user with -r option). But i tried it to see what ...
3
votes
1answer
319 views

What are the default openSUSE 13.1 user groups?

I just installed openSUSE 13.1, and I can't even start X on boot. I have to switch to another tty and type startx (after I set suid for xorg). On top of this, I can barely do anything without root ...
1
vote
2answers
171 views

how to list users in a group and their passwords

How do I view a list of users in a specific group and their passwords or attributes? I know to use cut -d: -f1 /etc/passwd But this only lists users.