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

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3
votes
1answer
84 views

Difference between logname and $LOGNAME

While reading about environment variables, the one I came across was LOGNAME, I'd like to know the difference between this variable and whatever the command logname returns - as both of them did ...
1
vote
1answer
88 views

OOM-kill a process from user with highest memory consumption?

I have a multi-user system, where active users should get a fair share of the available memory. Can I set up Linux to kill a process of the user with the highest total memory consumption? This will ...
0
votes
1answer
41 views

What is a good way to change a group of users UIDs without usermod executing a time consuming chown on the user home directory?

My situation I inherited a collection of four Linux boxes where no care was taken to keep UIDs unique across systems. There are ~40 users and over 7TB of data owned collectively by those users. In ...
0
votes
1answer
26 views

vagrant user able to switch to any user without any password while running command “sudo su - <username>” but other users doesn't

I have installed two vagrant hosts on my machine. I login using user/pass: vagrant/vagrant Created a user user1. When I am in vagrant user and type below command : [vagrant@host1]sudo su - I am ...
1
vote
1answer
27 views

How I can change the home directory of the sftp server on MAC OS X?

I'm trying to set up SFTP's home directory on a MAC OS X Mavericks for user my_user. Now, it looks like: /Users/my_user (i got it with sftp> pwd command) but I want it be: /Users/my_user/Documents/...
0
votes
0answers
42 views

How to set correct user group rights to application running with java?

How to set correct user group rights to application using java? There is this scenario: 1) I have created user group and user (the same) - call it "groupgroup" 2) When I create a file with this ...
0
votes
0answers
42 views

home directory restriction

I am in serious doubt and need to implement to specific area Scenario A normal user , he can create file and folder in his home directory .he wouldn't not permitted to delete folder and file ...
1
vote
0answers
93 views

How can I switch from one user to another user inside a script?

.The issue is my id 'aaa' can read only the file name and not the contents inside it when I log in with my id "aaa". So to read the contents I have to switch to another user "bbb" which is having ...
0
votes
2answers
62 views

How to use user-systemctl as root?

I want to start a user service from my root shell without logging into the users shell. I have tried the following command, but it fails: #> su - username -c "systemctl --user" Failed to connect ...
0
votes
3answers
98 views

How to stop a user from seeing command line arguments?

We have a CI server application run as the build user. Any command with arguments run by the CI server is visible via ps. Although non-admin users do not have access to load a shell on the CI server, ...
3
votes
2answers
84 views

Give /var/www files access to www-data and my user?

Any folder than I want my php code to be able to save in or any file I want it to be able to modify has to be owned by www-data. This is annoying because everything I create or want to edit without ...
2
votes
2answers
137 views

sudo tar changes extracted files ownership to unknown user

I am running this command: $ sudo tar xvzf nexus-latest-bundle.tar.gz The extracted files belong to an unknown (1001) user: drwxr-xr-x 8 1001 1001 4096 Dec 16 18:37 nexus-2.12.0-01 ...
1
vote
0answers
48 views

Change default group for any new user

I'm wondering if you could change defaults groups for new users without having to specify all of them manually. I'm trying to harden my ArchLinux and there's a group (provided by Grsecurity) that is ...
0
votes
0answers
52 views

Xterm and User problem on Linux From Scratch

I made a linux system using LFS book 7.8 and then went to BLFS 7.8. I installed lxdm and xfce4 desktop. All the necessary drivers and libraries are installed. Now when I log in as root, I get no ...
0
votes
1answer
96 views

Is AWS AMI 'apache' equivalent to Ubuntu 'www-data'?

I'm trying to convert a Chef script thats used in AWS OpsWorks for an Ubuntu system to a script I can use with my AWS OpsWorks setup for my Amazon Linux AMI installation. Their Ubuntu Setup: sudo ...
0
votes
2answers
268 views

Does a user have permissions to write outside /home/userDir?

Does a normal* user have permissions to write anywhere else than his own home dir? (no sudo and those privilege escalation tools) I say normal because I do not know more categories than root and ...
0
votes
0answers
73 views

Switching Users in Centos 7 gui

I got CentOS 7 installed with gnome desktop. During set up I set a password for the admin account, and also set guest with no password and without admin rights. When i rebooted and went to login the ...
0
votes
0answers
28 views

changing file and folder permissions for network shares

I am fairly new to linux but used it before and know bit about the command line etc... I am trying to set up a folder in which everyone has their own username and password with each folder, I have ...
2
votes
2answers
134 views

Limit a user to his own home directory

I have a user who can even use sudo. I want to limit his access to his home directory only. nothing else at all. I created a group ' limited ' and moved him to this group. Now What? How shall I ...
0
votes
3answers
1k views

How to change the Home directory of the currently logged In user

I am currently logged in into a CentOS server and I would like to change my home directory from /home/myuserName/ to /var/www/html/ I tried the below command : > sudo usermod -d /var/www/html ...
0
votes
1answer
61 views

How can I add all my groups to a different user in bash?

I've got a user named foo. I'd like foo to have all the same group memberships that I do. I thought I was close, with this: sudo usermod -a -G $(id -Gn | tr " " ",") node4 The id piped to tr is ...
0
votes
2answers
47 views

How to count how many files belong to each user/group combination?

How to count how many files belong to each user/group combination? I need to do this for each user/group combination that exists, in each of the directory trees /etc, /usr, and /var.
0
votes
0answers
114 views

Unable to log in to any user accounts on a fresh install of Arch linux

Has anyone run into the issue of not being able to log into their root account after a fresh install of Arch Linux? I have tried setting the root password twice with the passwd command within the ...
0
votes
1answer
56 views

Change user passwd with UID

Is it possible to change a user's password by UID? [root@CentOS7 ~]# id usera uid=1000(usera) gid=1000(usera) groups=1000(usera),10(wheel) [root@CentOS7 ~]# man passwd [root@CentOS7 ~]# passwd 1000 ...
2
votes
3answers
42 views

Users withouth password (at least for login)

I have a desktop pc with 3 users on it. (Linux Mint 17 Rafaela) These 3 users are mine, I use this configuration to isolate my work files and settings from the university files and my personal stuff. ...
1
vote
1answer
46 views

changing $HOME directory name

I'm Using Arch Linux + Xfce4 (Edit: running as VBox OS guest) and I wanted to change a username and it's home directory accordingly. I followed these steps as root: 1.Renamed the home directory # mv ...
2
votes
0answers
22 views

adding text to titlebar in all root windows [closed]

When a window is opended with root priveleges, I want to display some text in the titlebar to inform the user that he/she is root in that particular instance. I'm currently using the MATE desktop ...
1
vote
1answer
141 views

Is there a whoami to find the current group I'm logged in as?

I'm trying to find my current logged in group without wanting to use newgrp to switch.
1
vote
0answers
78 views

Proper permissions on SFTP upload and download subdirectories in a user's home directory?

I have a server running OpenSSH. I've setup an SFTP server that users can log into. I have created user userName with a folder at /sftp/userName with permissions of 555 and owner root. This folder has ...
1
vote
3answers
76 views

Is it safe to disable shell access to all users listed in /etc/passwd?

I have just read about how to disable shell access for users in Ubuntu in this post for security reasons. Is it safe to disable shell access to all users listed in /etc/passwd except the root:x:0:0 ...
3
votes
1answer
121 views

What is the purpose of the 'ssh' group?

There is a system user named sshd on my system, and a group named ssh: $ cat /etc/passwd | grep ssh sshd:x:120:65534::/var/run/sshd:/usr/sbin/nologin $ cat /etc/group | grep ssh ssh:x:117: My guess ...
-2
votes
2answers
117 views

Delete all users and groups except root in debian

I would like to delete all users present by default on my Debian, but I wonder what can happen if I delete them... I am learning linux so I want to clean everything except root and play around with ...
1
vote
0answers
15 views

Need Help to Solve Screenlock Bypass Issue for Expired User Account

I have created a script that I deploy to my children's computers via Salt. The script implements allowed working hours and has worked well, but one of my children have found a way of bypassing this ...
1
vote
1answer
90 views

How to fully manage users and groups with web GUI and create templates for new users?

I currently have an Ubuntu server with 10-15 users. I have some CLI experience, but I am not a fully CLI ninja. I currently have some groups made in the CLI to manage different groups of users. In ...
0
votes
1answer
73 views

How can I reveal the real name of the users online (with university IDs)?

In the terminal, how can I reveal the real name of the users online (with university IDs)? getent?
1
vote
1answer
147 views

logrotate fails to rotate logs: error setting owner

Recently I've noticed that logrotate does not rotate my logs. user1@host:~$ /usr/sbin/logrotate /home/user1/logrotate.conf -v gives me an error: error: error setting owner of /home/logs/mylog.log.1 ...
-5
votes
2answers
109 views

How can I create multiple users in Unix?

Someone tell me a way to create multiple users in UNIX. If I want to write a script, how can I do it? Any advice?
1
vote
1answer
105 views

How to add users to Linux through a shell script

The shell script that I have to write has to create new users and automatically assign them to groups. This is my code so far: echo -n "Enter the username: " read text useradd $text I was able to ...
0
votes
2answers
52 views

FreeBSD create user without utility?

I have a user that I created via the pw utility on FreeBSD. The full command I used was: pw add user example -s /usr/local/scripts/example.sh -w none The user can login as example without requiring ...
0
votes
0answers
33 views

Supervisord fails to run a program

I've a program that I try to run with supervisord but keep failing. The following is supervisord configuration: $ cat /etc/supervisor/conf.d/application.conf [program:application-web-1] command=env /...
0
votes
1answer
135 views

Home directory for system users

What is the best practice when setting the home directory of system users that don't have a specific working directory. I often have to create users to run specific binaries or scripts. Supposing ...
16
votes
3answers
879 views

How to get HOME, given USER?

I have an USER variable in my script, and I want to see his HOME path based on the USER variable. How can I do that?
0
votes
0answers
50 views

Transfer session between computers

At my uni, we use ubuntu on our lab machines, and we can log in anywhere on the network, and ssh into any lab machine. Is it possible to be logged into one machine then decide to transfer the current ...
1
vote
2answers
99 views

Specific user account for Apache in the /var/www directory

I will explain as best I can. On my previous server my friend set up a user called webslave. This user's home directory was /var/www. When I would use FISH protocol to transfer files (using Krusader)...
0
votes
1answer
53 views

Cannot edit visudo

I have to give my user permission to run sudo. I am using CentOs # uname -a Linux lab-hv1-centos1 3.10.0-229.el7.x86_64 #1 SMP Fri Mar 6 11:36:42 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux and have ...
1
vote
0answers
40 views

Listing ALL logged-in users. Also the ones not using a shell

We are working with an application that logs in to a Linux server (Ubuntu server 14.04) and just requests a reverse tunnel. Before we did this with Plink. And when the client was running Plink, I ...
15
votes
1answer
324 views

Why does ArchLinux keep some users/groups after package uninstallation?

I've noticed that after uninstalling the postgresql package in ArchLinux the postgres user and group are not removed automatically. The same is true for some other packages. Investigating this further,...
1
vote
0answers
21 views

What does UniqueID do on Mac OS X?

Scripts to create a new user on OSX typically use the command dscl to set a user attribute UniqueID. What does UniqueID do and how should I determine what to set it to?
1
vote
1answer
119 views

Ghost user? A user doesn't show up on the login screen nor in “users” command

There is a user in my (Mint 17) system that I can log into by typing the name and the password. But it doesn't show up in any list of users I can think of, be it the login screen or the output of ...
1
vote
1answer
49 views

How to add users and add them to groups in linux bash

sudo adduser –G {teacher} user sudo adduser –G {teacher} user How could I fix this if user is an input variable and teacher is an existing group?