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

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52 views

What does root means in terminal?

What is the difference between the following: I have 2 accounts in my OS, baron and root I login with baron account, then run the command sudo -s baron@linux:~@ sudo -s [sudo] password for baron: ...
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1answer
48 views

What is this file: .readahead doing in my root directory?

When I do: ls -a / on Fedora 21 there is a hidden file named: .readahead and it's 104092k What is this file?.... is it suppose to be there? I found this on google: readahead system call on ...
1
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1answer
26 views

Problem of graphic performance, “glxgears” between different users

I have a problem of performance with 3D Graphic NVIDIA (Quadro FX GRID K2/PCIe/SSE2), when I run glxgears in a terminal as root, the system performance is 9676 FPS, but if I run glxgears with other ...
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3answers
56 views

Why is gksu asking me for root password and not my password?

On one of my systems, I'm running Gentoo Linux and I've installed x11-libs/gksu-2.0.2-r1. I've disabled the root account using sudo passwd -dl root and I want to be able to run GUI apps which need ...
1
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1answer
55 views

Sticky bit and users with sudo permission

Let's say I chmod 1777 a folder /opt/test and all files inside it as user user1. Hence user2 is able to update and edit files inside the /opt/test directory. When user2 operates via sudo, he's able ...
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1answer
38 views

How can I have a system boot in to a root session and then run a command within that session?

I have a GNU/Linux system with one account, the root account. When I boot the system, I want it to automatically log in to the root account and then run a 'telnet' command within that session. How can ...
1
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1answer
54 views

wheel groups and permissions

I'm new to a lot of things Linux, so this might be basic stuff. We're thinking about setting up a wheel group and removing permissions from root. Not even sure that's possible. We are having a ...
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1answer
59 views

root can't send mail (apticron) but user can (mail/mailx)

I'm running Debian I've set up ssmtp as my MTA and this works perfectly I can send mail using both mail and mailx with a standard user account BUT... When I run sudo apticron I get: send-mail: ...
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2answers
27 views

How do I install programs in /usr/local if they shouldn't be compiled by root?

Somewhere in the back of my brain is the memory of reading a cautionary internet voice warning against compiling (i.e. running make) as the root user. Perhaps it's something like this story ...
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1answer
41 views

enable to write to file inspite we remove all file permissions

something isn’t clearly for me when I remove all permissions from file as chmod 000 I expected to get permissions denied when I write to file but still I can write to file as the following example can ...
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2answers
51 views

xsession error: cannot log in after changing environment variable

I tried setting a new environment variable (I use linux mint 17). After restarting, I couldn't log back in. It says: Your Session only lasted less thant 10 Seconds. If you have not logged out ...
0
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1answer
43 views

Set home directory of a user to root?

I would like to set the home directory for ftpuser to root. That's my command: # adduser ftproot -shell /bin/false -home /var/www What is the directory term for root?
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0answers
23 views

I chowned / recursively. How can I restore default permissions? [duplicate]

In a completely boneheaded moment, I ran the following command: #chown -R user:usergroup . What I failed to realize is that I was in the root directory, not in my target directory. Now the entire ...
4
votes
1answer
264 views

Why isn't this directory being added to my PATH when I use sudo?

Ive just compiled and installed apache webserver from sources, and now I want to add the apachectl script to PATH I know I need to add the directory to the root user's PATH (as the script needs to be ...
1
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0answers
50 views

Execute sudo command in C with system() [migrated]

I am writing a piece of C code that will run some sudo command in system("sudo ip route ...") function call. This call is being done in a pthread created by the main thread, and the main program is ...
0
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1answer
33 views

rkhunter warning about ssh root access when that access is not allowed on the system

I just ran rkhunter --check and all was good except this: Checking if SSH root access is allowed [ Warning] What does this warning mean? SSH root access is not allowed on this ...
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votes
1answer
60 views

Why there is always a root account in any OS? [closed]

I have tried different OSes and found 'root' or 'Administrator' account in every system. Which is usually disabled by default. So what is purpose of this account? Why would we need this account? At ...
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1answer
14 views

how to disable folders/files under root folder in RHEL?

I want to "disable" listing of folders and files under root folder in RHEL. So when I login to my application nothing should be visible in root folder.
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0answers
26 views

Do we need polkit and consolekit on our root-only servers?

We have workstations where the only user is root. We use them only through ssh to distribute workload. We installed Debian 8 (Jessie) on those machines. I've read that consolekit and policy kit are ...
3
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0answers
30 views

Content of root's home directory in OSX

What is stored in root's home directory on OSX? What happens if you delete it on accident? Heres whats in my current root home folder. OSX:~ root# ls -lash total 8 0 drwxr-x--- 5 root wheel ...
1
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1answer
18 views

sane does not work as saned but as root it does

I have a plug computer that I want to use as scanner server using sane. It already worked with a different plug, so I know for sure that the scanner and sane are workable together. If I issue ...
0
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2answers
51 views

/etc/passwd shortest password

I need to put one character inside the password file so that nobody can notice. I thought that if I was able to put the password as plain text and put something like a space nobody would ever find ...
1
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1answer
65 views

Difference between owner/root and RUID/EUID

I am relatively new to the concepts mentioned in the question and reading about them from different sources only makes them more confusing. So this is what I understood so far: When we are given ...
0
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2answers
60 views

Copy a large file to external disk

I am trying to copy a large (4.4 GB) file to an external usb drive. Unfortunately, about halfway through my computer freezes. I know my root partition is becoming too small (yes, I already emptied ...
0
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1answer
70 views

What is the difference between these two ways of reseting the root password?

I know several ways to reset root user's password, but want to know which is the best and why it is. For example: A method: Grub > 'e' init=/bin/sh (Remove rhgb and quiet tags if necessary) > ctrl+x ...
3
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1answer
57 views

How to poweroff headless machine using a script

I have a Java application that starts automatically when the headless machine (Ubuntu 14.04 Server) boots and runs as a user. When the application is finished I need it to execute a script to ...
0
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2answers
49 views

How to delete the whole root with rm rf and shred together?

My task is simple: I need to able to delete the whole root which i can do with rm-rf ./* but the problem here is HFS recovery can get back the data since it is not actually deleted from disk if i ...
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4answers
48 views

Can administrating task of 'root' be divided to the several of “more powerful” users?

Unlike root (which is able to do everything) is it possible to have multiple administrators assigned to manage only part of a system? For example, one system could have 3 administrators: ...
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votes
1answer
45 views

How to know su password

You already know my question. I don't have su authority. So I want to know su password. I really(x100) don't know how to find it. I tried change direction(/etc/pam.d/su) and tried to delete auth ...
2
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1answer
73 views

root password suddenly invalid

Thats a mystical problem: out-of-nothing (nearly :), I can't use my former root password anymore... System: Debian Testing What did I do: log into root doing updates (with aptitude update ...
1
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1answer
33 views

SUDO_USER undefined in sudo manual - clarification would be lovely

The following statement appears early in the sudoers manual, it refers to the "SUDO_USER environment variable" but the manual does not define it: If sudo is run by root and the SUDO_USER ...
0
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0answers
131 views

Linux Mint 17.1 Cinamon Desktop Icons Root Account

I am using Linux Mint 17.1 64 bit on vmware workstation (Windows 8.1 host). I mainly use Linux for testing programs I have written (some have to be compatible with Linux). And I want to get familiar ...
0
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0answers
24 views

mount nas to local folder as non root user

It seems that gvfs would do what I want, but I don't seem to be using it correctly. Let me give a concrete example, I am on a machine as user foo, and user foo has sudo rights. Then I can do the ...
3
votes
3answers
103 views

SUID accidently removed from /bin/su file

It is a production server - CENTOS 6.1 Some user having root access in the past had logged on to the server and removed the SUID bit from the /bin/su file and then exited root. Now we are not able to ...
0
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1answer
89 views

How to run privileged bash script as non-root? [duplicate]

I created a simple bash script which contains the command ifconfig. In general I want to execute such a privileged script to run as non-root user. I have tried hown root:users ./path/to/script.sh ...
0
votes
1answer
82 views

Shell script printing blank $USER variable when executed by Smartd

I have created a script that smartd daemon (smartmontools) executes as per command below. DEVICESCAN -a -m email -M test -M exec /usr/share/smartmontools/my-script -n stand... Smartd appears to be ...
3
votes
1answer
55 views

How to run ntp commands as non-root?

NTP commands such as ntpd and ntpdate are privileged and belongs to the root group. What is the best way to run these commands as non-root ? Linux capabilities, ownership, any method ? I have openSUSE ...
1
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1answer
44 views

How to run smartctl as root without switching to root?

I have this C code that runs smartctl command and takes its output: #include <iostream> #include <cstdio> #include <cstdlib> using namespace std; int main() { cout << ...
-3
votes
1answer
48 views

How can I get the root terminal to add myself into sudoers file so that I can act as root? [closed]

Once again, I'm trapped in a Linux security circle. When I start terminal, this is what I get: So I looked up the internet how to solve it. All solutions unsurprisingly require root permissions. ...
0
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0answers
12 views

Will I be able to install a service as a sudoer?

I will need to install a custom application as a service on a RHEL 6.2 box this weekend. Will I be able to do this with sudoer powers or will I need the root password for anything?
0
votes
1answer
42 views

NCR unix system v/386 release 4 recover root password

we have NCR 3455 system from long time as attached all information for server (images) , so we need your help to assist us to get root password which lost it , really we appreciate your efforts if ...
5
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5answers
512 views

What are the root permissions for a file?

If I type: ls -l file.txt I see that the rights for that file are equivalent to "456": 4 = owner (r--) 5 = group (r-x) 6 = others (rw-) Which the rights for root in this case? Does it have 777? ...
0
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2answers
30 views

Root to the Minimal

I am building a script to automate and minimize access to root. I am going to try do it via SSH. I am currently having an issue using sed to replace UID and GID 0 shell to /sbin/nologin. Why am I ...
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votes
1answer
74 views

How can I run a script as sudo and for it to not ask me for a password?

I want to run the following script: #!/bin/bash if grep -qs 'MinecraftServer' /media/kiancross/MinecraftServer/MinecraftServer; then echo "Disk already mounted, server boot will continue" else ...
0
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2answers
311 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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105 views

removing `nullok` from system-auth prevents any root password

[ this is a follow-up on my post on ServerFault : http://serverfault.com/questions/661136/root-accepts-any-password-how-to-change-to-a-real-password ] On an old system the root account accepts any ...
0
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1answer
92 views

Cannot install Sybase ASE on IBM AIX as root

I have a weird problem where I cannot install a Sybase DB server as root on an AIX virtual machine. I'm logged in as root and launching the installer as such: bash-4.2# ./setup.bin -i console ...
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2answers
68 views

start process (as root) upon user login

I would like to start a process as root upon each user login. The motivation beside this is, that the process will work on encrypted home folder of particular user folder. How can I achieve this?
0
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0answers
33 views

System sends alert when root-login fails three times

I have a server-system. I typed the password for the user root 3 times the wrong way, and I got an mail like servername : Jan 15 23:06:50 : username : 3 incorrect password attempts ; TTY=pts/6 ; ...
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1answer
42 views

Still able to read file after changing permissions

I've made a file as root, and written a string in it. Now I've changed mode to "0" like this: root# ls -al transit/ total 4.0K ---------- 1 root root 6 Jan 5 18:15 27050 root# If I try to tail, ...