Root is the superuser of Ubuntu. Questions about the / or /root folder are better suited for the "filesystem" tag.

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42
votes
1answer
82k views

How do I boot into a root shell?

When booting to the graphical desktop fails we sometimes are recommended to boot into a "root shell" or to boot in "recovery mode". How do I do that?
32
votes
9answers
137k views

How do I get permissions to edit system configuration files?

I can't seem to edit and save config files in the root system (eg: /etc/dhcp/dhcpd.config); it just says "permission denied" or the save option is blocked in the text editor. I'm pretty sure I'm a ...
76
votes
8answers
37k views

What is the difference between “gksudo nautilus” and “sudo nautilus”?

I've been using gksudo nautilus and sudo nautilus through Alt+F2. What's the difference? They look very similar!
66
votes
5answers
404k views

How to enable root login?

I would like to enable the root account on my Ubuntu installation. I realize the security implications of this.
131
votes
18answers
45k views

Why is it bad to login as root?

I've often come across posts on forums or other websites where you see people joking in such a manner about running/logging in as root as if it's something awful and everyone ought to know about it. ...
24
votes
8answers
84k views

How to find out root password for installing software

I'm trying to install the NetBeans IDE in my Ubuntu and in the process it's asking for my root password which I don't remember. I know my sudo user password. How can I recover my root password?
105
votes
4answers
189k views

Execute sudo without Password?

Inspired by this question.... I am the sole person using my system with 12.04. Every time I issue a sudo command; the system asks for the user password (which is good in its own way). However I was ...
31
votes
14answers
15k views

Why is there no option to login as root?

Why does Ubuntu not allow the GUI users to login as root at the time of system start up like administrator in Windows? Why they are restricting us to login only through the terminal?
3
votes
1answer
1k views

Changed permissions of / to user

I stupidly ran sudo chown -R carlos:carlos / and carlos is my user. This changed all files to be Carlos and I could not boot up again (because the root files were now owned by #1000) and I cant get ...
26
votes
3answers
402k views

What is the default root password?

I installed Ubuntu 12.04 LTS (Precise Pangolin), 64 bit. Nowhere was I asked to set password for root. I just installed AccuRev SCM software. It was installed under the /root folder by default. Now I ...
36
votes
8answers
372k views

“No root file system defined” error while installing ubuntu

I am new to linux/ ubuntu and just downloaded the v11 of ubuntu to learn linux. I faced this "No root file system is defined" error while trying to install it. This is how I was proceeding - ...
9
votes
4answers
26k views

How to fix sudo after “chmod -R 777 /usr/bin”?

I enetered chmod -R 777 /usr/bin and now sudo is not working. It is giving error that sudo must be setuid root. On looking via Google, some advice said to run chown root:root /usr/bin/sudo chmod ...
61
votes
3answers
15k views

When to use pkexec vs. gksu/gksudo?

There are two general ways to run applications graphically as root (or, more generally, as another user). Programs like gksu, gksudo, and kdesudo are graphical frontends for sudo. In contrast, pkexec ...
33
votes
5answers
12k views

How to NOT become a root user? Are administrators root?

I installed Ubuntu on my PC. To log in, I use the username and password I created during installation. Does this mean I am a root user? If yes, then how do I become non-root? It looks like non-root ...
14
votes
7answers
13k views

What are the benefits of sudo over su?

What is the actual benefit that Ubuntu (or Debian derivatives) achieve by disabling root user? Everywhere I read, it says to prevent unintentional damages for inexperienced users. I want to know what ...
4
votes
5answers
28k views

How do I resize root partition?

I have a dual boot setup with Ubuntu and Windows 7. I need to shrink my root Ubuntu volume in order to get some free space to create a new partition. Are there any Windows based tools that will do ...
32
votes
4answers
483k views

How do I login as root?

I want to login as root, but when I enter sudo -s and enter password, this message is shown: "you are not in sudoers file", and when I enter su and enter password, this is shown: "...
4
votes
2answers
11k views

Installing programs in root vs home partitions?

I'm a new Linux user and a Windows convert. I tried Ubuntu (Dapper Drake) a few years ago and liked it quite a bit, and I'm in the process of installing Xubuntu 13.10 along side Windows7 on my brand ...
12
votes
5answers
15k views

How do I open Deja Dup as root?

I wanted to backup /var/cache/apt/archives using 'Deja Dup' but it keeps saying >> Could not backup the following files. Please make sure you are able to open them. /var/cache/apt/archives/...
50
votes
5answers
54k views

How are administrators supposed to read root's mail?

What is the Ubuntu way for system administrators to receive system notifications, which typically take the form of e-mail sent to the root account? Examples of such notifications are the output of ...
22
votes
4answers
59k views

Change owner of internal hard drive partition from root to user

I have a number of drives internal and external. Some are partitioned. Most mount automatically at boot (all did at one point). One partition is owned by root and therefore does not mount ...
10
votes
3answers
60k views

“You are not the owner…” message when trying to access folder

In the properties menu of this folder the permission is set to "root" user and group, it shows the message "you are not the owner, so you cannot change these permissions." I am indeed the owner and ...
8
votes
2answers
7k views

Regain Sudo rights after removing from admin group [duplicate]

I accidentally removed myself from the admin group when editing the user. Now I can no longer use sudo. The error says: ber is not in the sudoers file. This incident will be reported. I booted up ...
18
votes
8answers
55k views

/usr/bin/sudo must be owned by uid 0 and have the setuid bit set

I have run following command accidentally sudo chown [username] -hR / Now sudo su getting error: sudo: /usr/bin/sudo must be owned by uid 0 and have the setuid bit set How to Solve This?
6
votes
4answers
5k views

Is it possible to open directories as administrator?

I want to have a root privileges on some directories. How can I do this?
57
votes
4answers
397k views

How to enable ssh root access on Ubuntu 14.04

I´d like to enable the ssh root access on Ubuntu 14.04. Editing the /etc/ssh_config (PermitRootLogin yes) didn't affect anything.
30
votes
4answers
110k views

How to configure ADB access for Android devices?

I'm using Ubuntu 12.10 and I have installed Android SDK, set it's path in my user .bashrc and it works. The problem is that my phone requires adb to be ran by root for permissions, but running adb ...
8
votes
1answer
14k views

Run command at boot as root

I need to run a bash script at boot-time as superuser in Xubuntu. I don't know where to start. I have to do something described in a Arch Linux guide. That guide says exactly: Add following at the ...
19
votes
5answers
193k views

How to change root password in ubuntu?

I am trying to change root password in my Ubuntu system. This is what I did: ashot@ashot-desktop:~$ sudo passwd root passwd: Authentication token manipulation error passwd: password unchanged ...
7
votes
4answers
78k views

How to run applications as root?

I am having some strange issue with Kate and Kwrite. When I click on Open File, it crashes with segmentation fault. I am a complete newbie to Linux, and I think the issue is that I am not running ...
6
votes
1answer
2k views

How to get sudo to prompt you for a password each time

I find that if I execute something using sudo that then if I execute something else soon after also using sudo, that it does not prompt me for my password, and although this can be inconvenient in ...
31
votes
8answers
27k views

How can a script check if it's being run as root?

I'm writing a simple bash script, but I need it to check whether it's being run as root or not. I know there's probably a very simple way to do that, but I have no idea how. Just to be clear: What's ...
17
votes
5answers
134k views

How do I open a folder as root?

More specifically the /etc/apt/ folder. I need to delete some files and replace /etc/apt/sources.list with a newer version.
17
votes
3answers
23k views

How do I set persistent environment variables for root?

To create persistent environment variables, I add the script file to /etc/profile.d directory, for example: # my script export MY_VAR=var_value This works properly for current user: alex@alex-64:...
12
votes
1answer
2k views

Why do I have low FPS unless root?

Problem: Normal users aren't using the best graphics driver. I first noticed this playing Osmos from the HumbleBundle2, but I can observe it while running glxgears too. Maximised on a 1280x1024, ...
18
votes
2answers
53k views

What is the difference between 'su -' , 'sudo bash' and 'sudo sh'?

I would like to know what is the difference between su - sudo bash sudo sh I cannot login as root while doing su - because I do not have the root password - I mean I have my user password with ...
2
votes
2answers
9k views

Graphical authentication works; why does sudo say my password is wrong?

I'm trying to install a theme, and when I enter the command sudo cp -r $HOME/Desktop/Overglossed /usr/share/themes the terminal asked for my sudo password which I entered, however I'm told my password ...
12
votes
1answer
86k views

How to install flash payer in Ubuntu 14.04 LTS? [duplicate]

How to install flash payer in Ubuntu 14.04 LTS ? Also how to get the root permission ?...
9
votes
3answers
5k views

How to recover root user [duplicate]

I have accidentally changed the root user from administrator type to basic type in the user account page, and now i have no whatever root previligaes on the system, how i can switch back to ...
2
votes
3answers
2k views

How can I get root-like permissions so I can download stuff from the software center?

When downloading an application from the terminal it said I couldn't download it because I wasn't root, and when I got to search for the specific software in the Ubuntu software center it doesn't even ...
9
votes
5answers
5k views

Why does Ubuntu force users to create a password upon installation?

There's been one problem I've had since I installed Ubuntu to run alongside Windows, I assume this would also be the same if it was installed to replace the other operating system as well, the ...
2
votes
5answers
26k views

Sudo not available in guest login

When I login as guest I am unable to execute any command with sudo. E.g.: sudo ps returns: sudo: unable to change to sudoers gid: Operation not permitted How can I fix this?
32
votes
3answers
39k views

Disable root account in Ubuntu?

I was asked for root credentials to setup my printer in Ubuntu. This seemed to be caused by a bug. And the suggested workaround is to create a root password. Since it is default that no root password ...
30
votes
3answers
38k views

How do I disable remote SSH login as root from a server?

For security purposes my company wants me to not allow anyone to be able to log into our Ubuntu server as root remotely over SSH. We still want the root account to exist, we just do not want it to be ...
10
votes
3answers
220k views

What is the default root password when was never set at installation time? [duplicate]

On a standard desktop installation, I created my administrative and user login. Further with some applications, the system ask for the root password. So my question is: What will be the default ...
8
votes
2answers
15k views

Run apt-get without sudo

This might be a very naive question, but I wanted to know how I could give multiple users access to a single computer without making them root users. How would I give them limitted sudo access such ...
6
votes
2answers
14k views

How to make files accessible only by root?

I'm using Ubuntu and I'm here to know is there any way to modify access of a specific application so that it can only root has access to it? Currently that application can be launched by general ...
9
votes
2answers
22k views

How do I launch a GUI application as root on user login?

I would like to launch a Gnome application with root privileges at login. I have tried adding a script to launch using update-rc.d myscript.sh defaults. It looks like the application does launch, ...
9
votes
6answers
6k views

Disabling shutdown command for all users, even root - consequences?

I would like to disable the shutdown command for all users, even root, on an Ubuntu Server installation. The reason I want to do this is to ensure that I don't get into the habit of shutting down the ...
5
votes
3answers
49k views

How to run a .run file as root?

I downloaded a .run file for a Nvidia driver, but when I run it in the terminal it tells me it must be run as root. I'm a complete noob and I barely even know what root is. I think it's somewhere ...