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

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file owner not able to renounce the ownership to root? But root can! [duplicate]

I logged in as username 'ravbholua' I created a file bb as below: ravbholua@ravi:~/Pictures$ echo>bb ravbholua@ravi:~/Pictures$ ll total 12 drwxr-xr-x 2 ravbholua sudo 4096 Oct 13 11:18 ./ ...
2
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3answers
261 views

What happens if I delete all user passwords?

I have a Fedora VPS with a root user that has no password. I login with SSH keys. I had another, less privileged account on that server, used for web administration. I've now deleted its password ...
3
votes
2answers
416 views

difference between windows local admin and unix root

I am trying to understand what is a conceptual difference between unix root account and windows local admin. I am a developer and despite IT department efforts were always given local admin rights so ...
3
votes
2answers
231 views

Seems that chown is allowed to non root user

We are using LDAP authentication and probably another things that I did not understand well, in our company so maybe the following questions are result of this. I have found strange behavior of chown ...
2
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3answers
349 views

Use EncFS to encrypt files so that a particular user or process can access them, but root cannot

I have a process which I would like to have access to an encrypted file system. This is very easy to do with EncFS, but this requires a user mounting the encrypted file system, therefore giving any ...
3
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2answers
59 views

Whose password should I enter?

Authentication is required to perform this action. Whose password should I enter? Mine? Root's? I can never tell. ...
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2answers
769 views

clonzilla + what the password for debian linux

Please advice what the password in debian Linux (debian Linux in clonezilla software - disaster recovery tool) Example I use the clonzilla (backup & restore tool) in order to clone Linux systems ...
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2answers
8k views

how to access root terminal in kali linux

I am currently using Kali Linux but I have a problem. In my Kali OS, when I open root terminal then it simply starts a normal terminal. I cannot access root terminal. When I update my root terminal ...
2
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1answer
145 views

How do I get tcpsvd to drop its root privileges?

Assume a script runs on boot as root. From this script I want to start tcpsvd -E 0 515 lpd. I want tcpsvd to run as an unprivileged user. But it requires root privileges to bind to the port 515. How ...
4
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1answer
5k views

Samba share permission denied user writing file but still shows

Very strange issue... Samba share on remote: [javaerpm] path = /u/abas/erpm/java force user = erpm guest ok = yes read only = no writeable = yes Mount command on local using ...
7
votes
1answer
658 views

why have programs like su access to /etc/shadow

Normally only root can access /etc/shadow. But programs like su and sudo can check passwords without running as root. So the question is: Why can these programs access /etc/shadow without privileges? ...
1
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1answer
45 views

Compiled, can't access with sudo

So I compiled FFmpeg from this guide as a standard user and it works fine as the user I compiled with but if i do sudo ffmpeg the program can't be found. Is it possible to make it accessible by root ...
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1answer
118 views

Problem with chown directory

i'm login with root account i want to chown my directory i do this: [root@sop /]# chown -R webadm:webgrp /ap/P12B/ I have this error: chown: changement de propriétaire pour `/ap/P12B/': Système ...
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0answers
93 views

Changing Android files in root directory

Does anyone know how (if it is possible) to change Android files stored in root directory, particularly logo.rle? I want to change my boot splashscreen, changing the file, which is stored in /. I have ...
2
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2answers
215 views

Execute user script as root in startup applications

I just created a script (logscreenlock) to log lock/unlock screen events (derived from this post): #! /bin/bash dbus-monitor --session "type='signal',interface='org.gnome.ScreenSaver'" | ( while ...
1
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1answer
67 views

Pamtester automate password testing

We have a system image which uses a default password for root. This should be changed, though I have a feeling not all users do this. I know I can test login with pamtester: # pamtester system-auth ...
0
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1answer
82 views

Resizing root partition in LVM broke Grub

I'm using Debian Wheezy hosted on W7 in Virtualbox. I needed to enlarge root partition then added a new virtual disk to virtual machine. Doing the steps mentioned below brings me to grub prompt. I: ...
3
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2answers
947 views

Difference between root account and administrative account

If a user with administrative privilege can have all the powers of root using sudo , then what is the advantage of having root account?
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2answers
581 views

How to see password as we type it

In debian wheezy terminal i type su - It ask for password, which i type but it dont show anything as Password: I want to it to show at least some asterisks as the placeholder for the password ...
3
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1answer
601 views

Can edit file as root, but not using sudo

I just faced a really strange situation. I was trying to edit file /usr/lib/thunderbird/thunderbird.sh, which has the following permissions: $ ll /usr/lib/thunderbird/thunderbird.sh -rwxr-xr-x 1 ...
3
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2answers
135 views

Log in as one user but authenticate as another

This might be a weird question but I wonder if there are possibilities to this. When I'm configuring a system I prefer to be root so that I don't have to sudo everything. However, the root account is ...
1
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2answers
10k views

How to properly configure sudoers file, on debian wheezy?

I have seen many blog posts that say, it is enough to do aptitude install sudo su root adduser USERNAME sudo But that only protects aptitude, in other words: aptitude install sendmail will ask ...
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0answers
63 views

Root has no permission on virtual console screen devices

Even being root I can't do the following: # cat /dev/vcs1 cat: /dev/vcs1: Operation not permitted And the rights are set correctly: # ls -o /dev/ crw-r--r-- 1 root 7, 1 Aug 5 22:00 vcs1 ...
2
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1answer
254 views

Why doesn't terminal show color schema once logged as root?

I'm currently using Debian 7 Wheezy, and I've noticed that the colors palette on terminal (which might be useful to identify among a large set of files and folders) are not enabled once I log as root. ...
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3answers
100 views

Is there any way to disable shutdowning remote machine?

I sometimes mistakenly shutdown the remote machine by using sudo init 0, so I wrote something like in one of my rc files: alias sudo='sudo ' if [ $SSH_CLIENT ]; then alias init 'echo Never use init ...
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1answer
79 views

How to ftp as root?

I can ftp to a linux server by doing ftp server But I can't do that with root. Need sftp or something or what?
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1answer
86 views

rsnapshot LVM without root

I'd like to cron a local backup to a locally mounted USB drive. I'm using rsnapshot and want it to back up an LVM snapshot onto the USB drive. But, unless I run the cron as root it complains that I ...
2
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2answers
133 views

Linux Kernel limit access to root with a button?

Is it possible to limit the access to a root account from within the kernel? I mean that if I press a button then the system detects the button being pressed and then allows access to the root ...
4
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1answer
101 views

Are there any security risks when mounting as root?

Are there any security related risks when mounting with root privileges compared to mounting with regular users? I have a script which does some ecryptfs mounting with non-root privileges (by design), ...
3
votes
1answer
585 views

Poweroff or Reboot as normal User

To run the command poweroff or reboot one needs to be super user. Is there anyway I can run this as a normal user? I just don't want to sudo and enter my password every time I reboot or power off.
1
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1answer
187 views

vmtoolsd doesn't end after logout

There is a process 'vmtoolsd' /usr/bin/vmtoolsd -n vmusr left when a user logs out. I have to type root password to shutdown or restart because of this. How to prevent this from happening? And what ...
1
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2answers
733 views

How to auto log on with root user in Fedora?

I'm a newbie in Linux, and I want to enable auto log on with root user for specific purpose. It's so bored when every time I power on my PC to study and I have to input user and password.
0
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1answer
112 views

Are there any Linux distros that protect against “self-mutilation”? [closed]

Over the past week I have installed and reinstalled Linux several times (Mint 15 in all but one case; Ubuntu 13.04 is too slow on my laptop), and after a mishap with QT today I completely gave up in ...
3
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2answers
145 views

why do I have two different results if I run a program through terminal(as root) or /etc/init.d(or /etc/rc.local)

Background: I use Debian Lenny on an embedded device uname -a Linux device 3.4.0 #83 Sun May 26 17:07:14 CEST 2013 armv4l GNU/Linux I have a C code (say my_C_program) that calls a board specific ...
4
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1answer
75 views

Root not affected by file permissions?

Why does this work as root? # touch test1 # chmod 000 ./test1 # echo "test" > ./test1 I take it root is not affected by file permissions?
6
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1answer
280 views

Any random password results in successful login on tty

I can login to my machine (FreeBSD 9.1-RELEASE) for any user (for example: root or operator or any that exists in /etc/passwd) with any random password that I type... I tried to reset password for ...
28
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4answers
3k views

Why is root login via SSH so bad that everyone advises to disable it?

Everybody on the Internet advises to disable root login via SSH as it is a bad practice and a security hole in the system, but nobody explains why it is so. What is so dangerous in enabling root ...
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2answers
1k views

change root account username

In windows it is possible to change administrator username for security reasons. Is it possible to change root username in Linux too?
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3answers
340 views

according root permission to www-data

I have a perl script dhcpmanip.pl which contain this line: system "hostapd /etc/hostapd-1.0/hostapd/hostapd.conf"` It's a command to start hostapd and I get this error : Insecure `$ENV{PATH}` ...
44
votes
3answers
2k views

How do the internals of sudo work?

How does sudo work internally? How is it possible that it can become root without having the root password, unlike su? What syscalls, etc. are involved in the process? And why is however sudo does it ...
0
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0answers
41 views

User drive is not showing

I'll try my best explaining this: /dev/disk0 /dev/disk0s1 /dev/disk0s2 disk0 does not show up at all, when I login even my desktop is completely blank with no dock nor toolbar so even to logout is ...
3
votes
1answer
304 views

sudo command executes without prompting for password

For some reason, I suddenly do not need to enter the password when issuing sudo some_cmd. Entered command just runs without ever prompting password, even if I am not logged in as user root. Commands ...
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1answer
163 views

How do i change the password for root using webmin, where i have no more access as root?

I changed the root password, using webmin it shows me successfully done. $ uname -a Linux .com 2.6.18-194.11.4.el5 #1 SMP Tue Sep 21 05:04:09 EDT 2010 x86_64 x86_64 x86_64 GNU/Linux $ echo -e ...
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1answer
874 views

Running program as root without using sudo with normal user account

Is there a way to force to run program as root (with normal user) when there's no sudo on the machine (and can't be added)?
0
votes
1answer
2k 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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votes
2answers
3k views

Invalid cross-device link while Hardlinking in the same file system

I have /home/myuser/Desktop/rc/.netrc file that i want hardlink to /root, ie home directory of root user. When i do: ln /home/user/Destkop/rc/.netrc /root it gives the following error: ln: ...
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2answers
454 views

Prevent root password change in ldap - debian

After setting up ldap authentication with pam in debian, evertything works fine. Using the passwd command change the ldap password of the current user. The problem is my ldap has been set up with an ...
0
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1answer
74 views

Ninja privilege escalation problem

I have a problem with ninja. I think I have configured it correctly. However, when I type in su test to login as test and then run sudo -i the log shows that test is in the ninja group when in reality ...
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3answers
124 views

Linux prompt missing brackets

I'm using centos in my VPS server and guest system. There're two logins for a guest system. One is root and one is regular. After I mounted the guest system and chroot to the mounting directory, I ...
2
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3answers
402 views

I have installed Linux distribution. Do I need to set root account or the user account is enough?

I have these credentials that I am using for logging in with my Linux distribution (Ubuntu 13.04) when starting the computer: james myawesomepassword123 I type the password on the login screen and ...