The "root" account is the most privileged account on a Unix system.

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create user with only permissions to execute C Programs

I am trying to build online code editor. My scenario : Through the web server a request is received for a 'C' program -the root user creates the file, compiles the file and acks success to the user. ...
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27 views

Login as normal user always results in root account [on hold]

I installed slackware and added a user. When i log in as the user everything looks well however it is logging this user as root. I can't see where I went wrong. When I try to open an application for ...
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1answer
63 views

What to do if the owner of /usr/bin/* changes to a non-root?

It would be the right thing to say that I messed up! Accidentally, I changed the owner of all files in /usr/bin to 'dev' from 'root'. Now, sudo does not work! If I use sudo with any command, I get - ...
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1answer
32 views

How do I make my script launch the screen as non-root

I'm running Minecraft, starting it automatically from from /etc/rc.local. I have that run /home/kent-server/mc/spigot.sh and inside that is screen -dms minecraft Java -jar -Xmx5120M -Xms5120M ...
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3answers
257 views

Set-uid executable and resulting process user

In Ubuntu 14.04, the passwd executable is -rwsr-xr-x 1 root root 47032 gen 27 01:50 /usr/bin/passwd and the ping executable is -rwsr-xr-x 1 root root 44168 mag 7 2014 /bin/ping so (for both) ...
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2answers
39 views

One shell script to perform commands locally and remotely

So, here's the problem. I have a file on a remote machine available only to root, and a private-key-only no-root SSH access(I do have sudo though). I need to copy that file to the local machine, and ...
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4answers
102 views

Edit /etc/passwd file from grub

I tried installing zsh on ubuntu ( 14.04). When I switched to zsh, I was unable to go into super user mode. If I do a su it asks for passwd and on entering the correct password, it says: Cannot ...
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0answers
19 views

Is it ok to run as root on Arch Linux? [duplicate]

I read an Arch Linux blog as well as googling this but I haven't found information on running as root on Arch... I have an Arch based system. Sudo is not installed by default, that's why for months ...
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1answer
44 views

Unable to get sudo lecture working on CentOS 7 server

I'm trying to enable the sudo lecture every time someone executes sudo, but I can't seem to get it working at all. I found a similar question here, in which someone states that if you don't see any ...
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2answers
55 views

Tool to watch other ttys for linux?

BSD systems have a neat watch tool for snooping other ttys : Have you ever had a user login to your box and then ask you for help? Or have you ever been curious as to what your users are doing on ...
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1answer
26 views

CentOS requires root pw for network pref changes

Why does CentOS require root privileges to configure the preference panels? It seems like sudoer access really should be sufficient for this. Is it possible to change this?
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1answer
32 views

Centos VMWare backup emergency mode password reset

I have recently backed up my remote virtual machine and downloaded the data into my local. I did the setup on my local with VMware workstation and tried starting the server. I realized I missed ...
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1answer
44 views

How do I set up busybox to allow a non-root user to set the date?

I have an embedded system built with busy box. I allow a user named "app" to download a program/script to a directory and it will be run on boot. The program should be allowed to set the date. It ...
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3answers
27 views

Does it matter if I'm root or not when installing apache?

I need to install a LAMP stack on a RHEL 6.7 server. Do I have to be root to install this or not?
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0answers
48 views

Centos 7 root passwd reset

I was stupid enough to log my root password on one spot and that crashed so I lost my root password to my server. I followed the guild of ...
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0answers
34 views

How to run a Qt application on a remote host as root?

Deploying a Qt application to a remote linux host is straightforward. However, the program runs with the rights of currently logged in user on the remote machine. For debugging purposes, I often ...
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3answers
97 views

How can I test if a file in /root exists without su to root?

My OS is Ubuntu 14.04 LTS. I got a file /root/1.txt, and logged in with 'yu', who doesn't have read permission on this file. When I use the code if [ -e /root/1.txt ] , it returns false. I know I can ...
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1answer
20 views

Copy /home without root [duplicate]

I installed Xubuntu on a friend's PC and he understood, that is it greater than Windows 10. He has no practice with shell and dont want to use it! The PC is used by several people. He (the owner) is ...
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2answers
51 views

Why when I try to execute a program as normal user I get denied, and when I execute it with sudo I get “Not Found”

In order to execute mysqlbackup I have to execute it as root. Here's the example when I execute it as normal user: mysqlbackup --compress --user=root --socket=/var/lib/mysql/mysql.sock ...
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1answer
48 views

How can I merge 2 disk images into one with 2 partitions?

I have 2 (relatively small) disk images for qemu (raw format) containing different filesystems (say fat and ext4). I want to put them into an usb stick as two different partitions so that I can plug ...
3
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1answer
37 views

Is it safe to make symbolic links in /root to config files in a a users home directory?

Does symlinking from /root to a configuration file in a users home directory bad practice security-wise? For example I currently have /root/.vimrc symlinked to ~/.vimrc Is it a viable attack to make ...
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1answer
33 views

Getting password prompt after editing sudoers file in cent OS 7?

Part of my sudoers file lines begingin with mukesh are edited: ## Allow root to run any commands anywhere root ALL=(ALL) ALL mukesh ALL=(ALL) SOFTWARE,DRIVERS mukesh ALL=(root) ...
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2answers
39 views

Root users home directory (/root) modified

Both Thunar and the ls command tell me that the /root folder has been modified recently. Using the find -mtime -1 command within the /root folder, I discovered that a hplip log had been modified. ...
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2answers
35 views

How to have the same configuration for both root and user?

Hello I just installed Debian and have only one user since it's my personal computer. I would like for all softwares, x, xfce, terminal, vim, shell to always have the same configuration without me ...
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5answers
120 views

Why does superuser exist in Unix/Linux?

I know that some system tasks are permitted only to privileged users/processes, but still a super user (usually the root in Unix/Linux) or administrator can present so much problems in regards to ...
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1answer
45 views

Why is “nobody” called the “most privileged user after root”? [duplicate]

When I was first learning Linux I recall reading that because it is so widely used, "nobody" is (jokingly?) known as the "second most privileged user, after root" on Unix machines. A quick google ...
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1answer
101 views

Cannot connect to wifi with wpa_supplicant

I just installed Arch Linux on my laptop. So far I have only been able to connect to wired networks. When I try to connect to my wifi network with wpa_supplicant -D nl80211,wext -i wlp3s0 -C ...
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0answers
40 views

How to restrict su from root to nis clients

We are using NIS services for users login for Unix accounts. We have test machines where users themselves install OS and they get root access. Users are using su from root account to NIS user accounts ...
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39 views

Execute commands without sudo inside jenkins

I've imported a bunch of jenkins jobs and these jobs have a lot of shell script commands.There are no sudo before these commands.Jenkins has its own user.Is there a way so I can execute these commands ...
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1answer
116 views

pulseaudio run as root

I have Ubuntu 12.04 installed on my PC, recently I have edited /etc/passwd and changed user1:x:00:00:user1,,,:/home/user1:/bin/bash to give root permission to user1 and the system always need to ...
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2answers
78 views

How can I start program on boot in Ubuntu 14.04?

Is the root crontab the only way? I'm starting up a MC server and don't want it to need me to manually restart it each time the server reboots for whatever reason. I don't want any login required ...
0
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1answer
49 views

How to enter a user account and run commands from a shell script being run as root?

I am presently writing an automated install script for Arch Linux, to simplify the install process for myself (in case my current installation of Arch goes belly up and I can't fix it myself), but the ...
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1answer
49 views

Is there a way to start always as a root?

I'm using Debian Wheezy, and I need to be always as a root. So I do the following every-time I restart the OS: $ sudo -i then startx. Is there a way to restart directly as a root every-time?
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2answers
73 views

How to protect/secure the “sudo” log_input/log_output logs? [duplicate]

My Chief Security Officer (CSO) want to log the activity of the privileged account (root). I know I can configure sudo to log user input (key strokes) and console/terminal output (stdout/stderr), as ...
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0answers
84 views

Unable to su to any user as root on Red Hat 6.7 server

System: Red Hat Enterprise Linux Server release 6.7 (Santiago) I am trying to su to kms user(OS user) as root but i keep getting error saying You are required to change your LDAP password ...
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0answers
19 views

Kate/Terminal/Chromium/etc. refuse to open

I accidentally ran a GUI (Kate) with sudo--dumb I know--and when closed the application I got this error message: Error: "/var/tmp/kdecache-username" is owned by uid 1000 instead of uid 0 I've done ...
4
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3answers
147 views

What exactly differentiates the root user from every other user?

What are the fundamental differences between some arbitrary account and root? Is it just the UID being something other than zero? So, what exactly does the su binary do and how does it elevate a user ...
0
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1answer
53 views

Floppy drive can only be mounted as root

Yes I know - a floppy drive. but.... I want to extract a whole bunch of samples of old floppy discs (about 300 discs) from my Ensoniq EPS sampler (that has died). I am using a C program called ...
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20 views

Telegram on Kubuntu 15.10 asks for phone number every time

I've downloaded Telegram from their website and ran the executable, it keeps asking me for my phone number and to insert the pin code I receive , every single time I log in. It's becoming ...
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2answers
98 views

Why does root need to enter a password when executing specific commands?

On a certain RHEL5 machine, when root is executing commands such as passwd someuser or any other privileged command, the root password is requested for verification and the command can't be executed ...
2
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2answers
96 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 ...
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1answer
99 views

debian 8.2 can no longer su to root

If I try to "su root" with an incorrect password, I get the expected 'authentication failure'. If I try to with the correct password, I get 'setgid: Operation not permitted" I have tried the usual ...
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4answers
99 views

Disable root login in CentOS 7.2.1511

Allegedly, if you are logged in as non-root and write sudo passwd -d root, root login will be disabled, meaning that you have to log in as another user and use su to switch to root (or just stick with ...
2
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2answers
96 views

How to switch to root and use same dotfiles as my normal user?

I run zsh on Mac OSX, and sometimes want to switch in the terminal to the root user. I'd like to keep all my dotfiles, and environment path configuration and scripts from my regular user, and just do ...
0
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0answers
72 views

Unable to use Nautilus

I've got Trisquel 7 GNU/Linux distro, with GNOME 3.8.4. I'm finding impossible to create a folder in Nautilus, or drag and drop files into the Desktop, out of other options. I find this quite ...
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2answers
263 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
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1answer
104 views

How to add public key to QCOW2 image via virt-sysprep

I am trying to add my public key to the root account on a qcow2 disk image (CentOS 7 Cloud Image). The documentation from virt-sysprep says that it supports adding keys, but I cannot seem to ...
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2answers
56 views

Changing root's passwords using setuid

Is is possible to change root's password using setuid? What I tried is writing a simple program which calls system("passwd root") owned by root and its setuid bit is set but it didn't work. The ...
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3answers
182 views

How to increase disk space in root?

So I check on my server using df -h and my centos-root is at 99% capacity. Just a few days ago, the root is at 87%. For some reason, it increases so quick. Is there any suggestions on how to reduce ...
2
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2answers
81 views

OpenSUSE disabled root login (no root psswd set) >> yast, config issues

I disabled the root login on my system (blank password). Now I cannot configure my system from GUI (it asks for the root password). Everything is fine in CLI (e.g. launch yast2 from CLI works ...