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

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3
votes
0answers
477 views

recommended procedure to create a user/group during RPM install

after trying hard to search for RPM best practices guides and finding virtually none, to my surprise, I resort to the community - I need to ensure that some users and groups exist after the ...
3
votes
3answers
2k views

Another account with same uid as root gets prompted to set new password for root, not itself

After upgrading the os from 5300-06 to 5300-11, this weird behaviour happened. My system had another unix account, let's call it "abc", purposely configured its uid to 0 for working as a root with ...
3
votes
0answers
185 views

Will a account get locked while logging in FTP mode to a remote server whose password has already expired in UNIX

I have a FTP user id to a remote server, the password for which has expired.The account is getting locked if connection is being made in FTP mode to the server with the old(expired) password. Is ...
3
votes
1answer
706 views

How do I add a local user to a box that uses LDAP authenticaiton?

I'm working with a box that uses LDAP for user authentication. However, I need to add a local user to run some services and I don't want non-person users junking up the LDAP directory. Does anyone ...
2
votes
6answers
608 views

sort ls output by users

On Linux, is there a way to sort ls output by users? What I try to achieve is something like this: user_a   file1 user_a   file2 user_b   another_file user_c   this_file user_c ...
2
votes
2answers
281 views

using chown in linux

I want to assign www-data user full rights in folder /var/www/ and all of the files inside this folder. I have tried chown www-data /var/www/
2
votes
2answers
2k views

How to get hashed password in /etc/shadow using getpwnam()?

Apparently there is a function (getpwnam) that given a username, will return the appropriate entry in /etc/passwd with the other details for that user (shell, uid, gid, etc.). However, I have no idea ...
2
votes
4answers
313 views

delete a system user account if daemon is no longer needed?

In an unusual scenario, I have to get rid of a specific system user account called 'lp' (line printing deamon) on an openSUSE system. Can I just comment out the line for that account in /etc/passwd ...
2
votes
5answers
8k views

What is the command for listing all users who are members of the admin group?

I am looking for the name of the superusers list on Fedora. (On Ubuntu is seems to be "sudo".) I want to add one of the users to the superusers list. The groups command only lists the groups of the ...
2
votes
1answer
402 views

How to create a sudo user that cannot delete me?

I'm sudoer on a remote linux machine and would like to create another user with the maximum privileges, except the privilege of managing my account. I'm assuming a sudoer can delete or change the ...
2
votes
2answers
984 views

Directory/files owned by a non-existent user

A user has created a directory with files, but the user does not exist in /etc/passwd or /etc/group. The system is a Fedora server with an FTP server and proxy which redirects to a CentOS server with ...
2
votes
3answers
8k views

usermod -d /path user - User is currently logged in

good Day I want to make a change to a user on my CENTOS server. I want to change his default directory. When running the command: usermod -d /path_to_new_dir david terminal gives me the following ...
2
votes
4answers
555 views

different shell for root and non-root user

When I ssh as root, my shell is bash, but when it's a non-root user it is sh. How can I make them both to use bash? This actually goes against the logic in this question: Why root's default shell is ...
2
votes
3answers
441 views

su and aliases confusion

I create an alias as my current user in the bash shell, which I can see using the alias command. When I switch user without the -, i.e. su testuser, the alias is not carried into the new user's ...
2
votes
3answers
536 views

What command should I run after making changes to /etc/passwd file

I have made some changes to /etc/passwd file ,now I wanted to see if the effect of changes taken place or not .What command should I run for that. For example after making change to ...
2
votes
2answers
3k views

How to tell who is connected via vnc to my machine?

How do I check how many vnc connections or different users are currently connected to my machine? Only through wireshark? And how do I kill any other users connected through vnc?
2
votes
2answers
957 views

SFTP with Mysql user pass instead of PAM

Is there a way for people to log onto a debian server via sftp using just mysql database table as authentaction. IE not adding a user to the system? I know it can be done over ftp and TLS but i ...
2
votes
4answers
3k views

NIS: How to allow access to both local and remote users' home directories?

We have a NIS server with shared users' home directories in '/home'. We're used to mounting the server's '/home' using '/home' as the mount point on each NIS client. However, if we do this with a ...
2
votes
1answer
46 views

Does root not require a password to log in as a user?

Does root not require a password to log in as a user even though a password has been set for that user? When I am logged in as "root", su user logs me in as "user". There is no prompt for a password. ...
2
votes
1answer
389 views

What audit log files are created in linux to track a users activities?

One of the machines on our networks was consuming a large amount of Internet bandwidth. However no user was using the system. When I connected to the server using SSH and ran who it showed that a ...
2
votes
2answers
95 views

Creating a User-less Distro

One of the popular programs I use is GParted, and it has its own custom distro, that boots straight to the desktop, and starts the program. I couldn't find any information on creating such a distro. I ...
2
votes
1answer
295 views

Should I use useradd or adduser?

I am trying to add a new user to the system. I am confused though which command to run: useradd or adduser?
2
votes
1answer
113 views

Is it possible to log directly into chroot?

Lets say I boot up my computer and I see the login screen. When I log in as myuser, I want to be restricted to a certain root directory via. chroot. Let's assume that the directory is ...
2
votes
3answers
122 views

Is unix good with many users/groups?

If I have 10,000 webapps on my server and I'd like enhanced permissions and make a user for every app (/var/www/NAME will have a matching /tmp/www/NAME), will everything be fine or will problems occur ...
2
votes
1answer
754 views

Deny external SSH access to a user

Is it possible to deny access to a user (in my case www-data) from outside the network? Or possibly deny this: ssh www-data@example.com But allow this if already logged in: su www-data
2
votes
2answers
81 views

Changing username still leaves old traces

I changed my username about a month ago, and although I have forgotten the specificities of how I had done so, I'm pretty sure I followed the instructions on the Arch Wiki. Since then, some programs, ...
2
votes
2answers
2k views

su - user doesn't work for users without a password

I've created a user on CentOS with useradd -M username. Now, I want to become that user just like su - username. It asks me for a password for that user but I didn't set a password for that user. As ...
2
votes
2answers
373 views

What does the `who` command result `root :0` mean?

The return value of command who will always include root :0 in X Window pts. I guess it actually means the GNOME login. Am I right? Another question is where to get this knowledge, as I don't see it ...
2
votes
1answer
3k views

How do I add a new user to an embedded Linux system by hand?

I have a system which was designed for use by root only and I want to run an FTP server on it. The software I use handles authentication by using same username and password as OS itself. To me it ...
2
votes
1answer
116 views

rc control user

I am playing around with rc scripts. I am starting a daemon from rc.local. I would like to know how I start the process under a specific user instead of root?
2
votes
3answers
48 views

adding list of users to multiple groups

I have a shell script which add list of users which is listed in another file lets say users.txt. After that, I want my script to add users to multiple existing groups with condition, one user may ...
2
votes
2answers
107 views

Convert numeric string from file to exit code in shell

I'd like to grep /etc/password for a username and return the last two digits of a user-id number as the return code. This is because I have an application whose main way of interacting with other ...
2
votes
1answer
130 views

With NIS users, how to find out which users are currently logged in?

I'm using a NIS server to control 100 clients. I'm using NIS for centralized authentication and NFS to share the home directory. The main problem I'm facing is that I cannot find out which users are ...
2
votes
1answer
50 views

How do I set a newly created user account to NOT prompt the user to change their password?

I created a new user account, but the user is prompted to change their password on first login. I don't want them to change their password, I want them to use the password they were assigned. How do ...
2
votes
1answer
214 views

Sendmail can't find local users (with uppercase letters)

Sendmail works through sending to a smarthost, but can't find local users. # sendmail -bv LocalUser@myhost.net LocalUser@myhost.net... User unknown # grep LocalUser /var/log/maillog Sep 8 03:48:30 ...
2
votes
1answer
942 views

How to change the username in Ubuntu 10.10?

I want to change a username. In the prompt, which says abhishek@hello$, I want to replace abhishek with alok (i.e. alok@hello$). Is it possible to do that without reinstalling Ubuntu?
2
votes
2answers
121 views

How to generate folder ownership lists for each user?

I'd like to generate several separate lists for each user in Ubuntu. The lists contains the files and folders belong to each user. Using the command following list me all the users in the system: ...
2
votes
1answer
142 views

Where can I find a reference to the format of the comment field (field 5) of the /etc/passwd file?

In the /etc/passwd file on my system, the "comment" field, field 5, is inconsistent in its contents. I thought that I could extract it to get the full name of the user. fullname=`awk -F: '$1 == name ...
2
votes
1answer
7k views

Changing user and group ID system wide (including file system attributes)?

(this question possibly related to Linux: simulating/masking user ownership upon mount of 'external' partitions? - Stack Overflow) I typically use Ubuntu (currently 11.04) as my desktop OS; let's say ...
2
votes
2answers
4k views

How can I switch one user to another in Freebsd?

How can I switch one user to another in Freebsd? For examples, I am user david now and I want to change to user Bob. This is a personal OS for my study. not a server. I searched it, but only got ...
2
votes
2answers
62 views

User created without a password behaves as if he had one

Inside one of my scripts, I created an user based on a directory arrangement on another machine. The thing is that this user, created without a password, behaves just as he had one : he has sudo ...
2
votes
2answers
85 views

Configure external HDD for use with multiple linux PCs

I've got an external drive, and I'd like to have a linux partition on it. I formatted everything correctly on one machine with Fedora20 (I have one ntfs and one ext4 partition), but when I plug it in ...
2
votes
2answers
6k views

Restrict FTP user to a directory

Sorry if this is an obvious question, but I don't have a lot of knowledge about this sort of thing, and I've googled for hours, nothing worked. So on a Ubuntu 11.04 server, I want to restrict a user ...
2
votes
2answers
687 views

CentOS can't remove user from group

Asked and answered many times, but I can't get it working!!! (On CentOS) I have the user userA and I want to remove it from group sftponly. #groups userA userA : sftponly #id -Gn userA sftponly ...
2
votes
4answers
240 views

Open program as root, close root session but still program is running

When I run my backup script, first I switch to root, mount a truecrypt partition and then run the script. I've noticed that after run truecrypt as root, I can exit the root session and truecrypt ...
2
votes
1answer
178 views

Delete every users from a group

I search a clean way to delete every users from the 'sudo' group. On several distributions the user created during the installation process has sudo rights, I don't want this. I search for an ...
2
votes
1answer
67 views

Optimal way to setup user account / accesses?

I have a (home) Ubuntu machine; upon installation I created the "x" user during the installation (who is not the root) so often when I want to run apt-get or other things that require write access to ...
2
votes
4answers
2k views

Allow paswordless user to change to another passwordless user

I have two users dev and tomcat neither of them have a password. How can I allow dev 1 do su - tomcat without having him having to enter any credentials? 1 connects with ssh keyfile
2
votes
1answer
2k views

Changing my default primary GID for every login session

I read the following about newgrp: The newgrp command is used to change the current group ID during a login session. This made me think, how can I change my default's primary group ...
2
votes
1answer
188 views

'who' has no output

I'm new to Arch Linux, and I just built my system up. But when I ran who in urxvt, I got nothing. Anyone know what's going on? BTW. I use Slim + OpenBox. And here are parts of my configure files. ...