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

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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
42 views

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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29 views

Login as normal user always results in root account [closed]

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
33 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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1answer
1k views

How do I stop Apache from running as root?

New on the job, small place, and the security stuff just landed on my desk. I was hired to be a front-end developer. Happy to learn new things, but never had to do sysadmin stuff before. I started ...
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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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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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2answers
6k views

How to autologin as root to mint 17.1

I would like to know how to autologin as root on mint 17.1? I've been able to login as root from the login screen (by enabling root access in login window settings and changing the theme to clouds). ...
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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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4answers
104 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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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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0answers
20 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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2answers
57 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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2answers
806 views

Root access denied in LiveUSB of Portues

I am on Live Linux USB of Porteus linux and I copied it to RAM. I want to access root folder for making changes so that settings gets saved. but this is showing up
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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
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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3answers
96k views

How do you change the root password on Debian?

I want to change the password I assigned to root on my Debian webserver to something longer and more secure. Bit of an obvious newbie question, but how do I do that? I haven’t forgotten/lost the ...
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2answers
14k views

can't ssh into remote host with root, password incorrect

I have a remote host, previously I can ssh into it with root and password ssh root@remote_host or I ssh into it first using a regular user account ssh esolve@remote_host and then su root and ...
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1answer
123 views

I moved root partition by error

I'm on a VPS with CentOS 6.5 I was trying to install ASSP so by error i did this command mv -f /* /usr/share/assp and then I can't do anything when I try something like: [/]# dir -bash: /bin/ls: ...
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2answers
381 views

Can't run aplay as root!

Not that I need to aplay as root but it came across me and I wondered why it shouldn't work. # aplay /home/bibek/apert.wav XDG_RUNTIME_DIR (/run/user/1000) is not owned by us (uid 0), but by uid ...
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1answer
49 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 ...
0
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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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3answers
98 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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0answers
49 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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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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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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6answers
2k views

Is there a root password on OS X and Ubuntu?

When you setup a new Ubuntu or OS X installation a user is generally created for you. On OS X it is whatever username you pick. On Ubuntu (the server version) usually the ubuntu user is created. The ...
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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 ...
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1answer
2k views

Start application as root at boot time on Ubuntu 14.04

I'm working in Ubuntu 14.04 I have an C++ application which I have compiled. I get the executable which name is "program". Well the thing is that this program use opencv and sockets then if I try to ...
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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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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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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3answers
2k views

Why does sudo su work, but su does not? [duplicate]

I have tried this on Fedora and on Ubuntu. kshitiz@kshitiz:~$su su: Authentication failure kshitiz@kshitiz:~$sudo su root@kshitiz:/home/kshitiz# I am entering the same password in both the cases. ...
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3answers
6k views

Write to a file without redirection?

I am writing a regular compiled application that needs to create a special file and write a magic cookie into it. I can’t write the file directly from the application, the system security model ...
6
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2answers
7k views

How do I disable remote root login via ssh?

How do I disable remote root login via ssh? I want to log into my server (I use keys on my main comp) then su into root instead of access root directly. I am using Debian. I follow guides online ...
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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 ...
2
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1answer
102 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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5answers
121 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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0answers
41 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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0answers
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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votes
1answer
122 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
81 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
52 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
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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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4answers
9k views

How far can you go with rm -rf / as root

If you are root, and you issue rm -rf / Then how far can the command go? Can you recover data from this kind of an action? Even after the binaries are gone, would the running processes still be ...
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0answers
85 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 ...
0
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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
148 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 ...