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

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1answer
21 views

Trying to ssh root, why get permssion denied in 16.04?

I'm trying to set up passwordless ssh between root accounts in 16.04 (needed for Hadoop installs). I set up a password for root by sudo su - root and passwd. When I try e.g. ssh -l root slave3 or ...
0
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0answers
18 views

How do I recover 14.04 from “no root file system is defined” while upgrading to 16.04?

This is a problem. I tried to upgrade from 14.04.03 LTS to 16.04 LTS without backing up. (Sorry, my backup drive was full and I didn't know how to restore it.) I used a DVD to upgrade it, and ...
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3answers
44 views

How to set up passwordless ssh for root account?

i am trying to follow the instructions here to set up passwordless ssh between root accounts (needed to use Ambari). However this involves ssh-copy-id user@machine and since user is root, when I try ...
0
votes
1answer
42 views

Can I start Terminator as root?

I am using Terminator, because it has cool ability to split itself into more terminals. But can it be run as root, without need to type sudo -i after launch? (adding Run as root into Terminator shell ...
7
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0answers
57 views

How to make /sbin/shutdown, /sbin/reboot etc. require sudo again in 16.04?

For whatever reason, we do no longer need to be root (or using sudo) to run /sbin/shutdown, /sbin/reboot etc. This seems to be because those executables are now symlinks to /bin/systemctl which ...
0
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1answer
44 views

What is the difference between the group root and the group sudo? Why root user by default is not a member of the group sudo?

I am quite confused regarding this matter. As far as I know the user root has all the privelages. Also all the users of the group sudo has all privelages. But the user root by default is not a ...
0
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0answers
36 views

Command “sudo su” is not working [duplicate]

By mistake my bashrc has changed (using source command to a .com file). Now sudo su command is not working. To use root I have to give bash command. How can I return previous stage? Or use sudo su?
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2answers
30 views

Extending root partition Ubuntu 16.04 [duplicate]

I've run out of space on my root partition and I want to extend it. I've seen another posts of this topic but my lack of knowledge makes it difficult for me to achieve what i want. Here's a screenshot ...
1
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1answer
29 views

MySQL does not accept password not lets me reset password by skip-grants-table, unable to login

I terminal I have typed: apt install mysql-server mysql-client It asked me for password and I gave it. Next I typed: mysql_secure_installation It prompted me for password. I am cent percent ...
0
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0answers
15 views

My 16.04 laptop just logged me in as root without a login screen

After boot, my laptop on up-to-date kubuntu instantly went to the desktop loading screen without asking for any passwords. Turns out it had logged me in as root automatically. I have not set a ...
0
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1answer
40 views

Sudo: /usr/bin/sudo must be owned by uid 0 and have setuid bit set [duplicate]

Help I'm stuck. My login page was looping I checked online came here and most solutions didn't work for instance I didn't have the .Xauthority file listed when I ran the command ls -lah, so I stumbled ...
1
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2answers
129 views

Rooting BQ Aquaris M10 tablet? [closed]

With Ubuntu, i think the root access is essential, just like ability to remove any "cloud" apps, like automatic update checks or stuff like crash reports etc. Should i buy this tablet if i need: ...
3
votes
1answer
31 views

Automatically start JetBrains softwares as root (via plank shortcuts) on Ubuntu 16.04

I'm very new to Linux environment, I came from Windows. I've installed Ubuntu 16.04 on my machine (an XPS 15 9550 with a dual boot - Win10), a plank and a theme (macbuntu, don't blame me :p). I'm ...
0
votes
1answer
35 views

Problem with installation of apache solr

I am trying to install apache solr and I am following this tutorial. The problem is when I am trying to run bin/install_solr_service.sh --strip-components=2 it tells that Supported OPTIONS ...
0
votes
0answers
57 views

How to Reset Root password without login? (I know current Root password)

I want to change the root password of my Ubuntu Server without logging in. I know the current root password. I've tried ssh root@SERVER_IP echo "currentpassword|newpass|newpassagain" but it's not ...
-1
votes
0answers
29 views

administrative password changed after losing but now doesn't login

I did the recovery mode then root then after receiving authentication token manipulation error I did the mount remount then chmod 640 /etc/shadow then when I tried the recovery on root passwd '...
1
vote
1answer
29 views

Accidentally created another root user. How to delete or change permissions?

I need a non-root user to do certain (safe) things. I didn't pay attention, and used useradd -ou 0 -g 0 new_user_name, which gave root permissions to the user. It also has the same UID of 0. Before ...
0
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0answers
21 views

Root Drive Partition

I am unable to create a new drive. need help...
0
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0answers
11 views

System Tunables with sysctl [duplicate]

for my linux foundation study i must do this; In the below we are going to use two methods, one involving sysctl, the other directly echoing values to /proc/sys/ kernel/pid_max. Note that the echo ...
-2
votes
1answer
30 views

Creating long root passwords

Lets say I have root password somepass. Is there a way to create a script that changes my password to a string consisting of the original password concatenated with itself n times ? I.e., if n=3, the ...
0
votes
0answers
20 views

Failed Root Authentication Problem

When I install Ubuntu 14.04, during the installation it never asks for my root password, and when it installs I cannot sign on as the root. Please help
0
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2answers
23 views

Can I use binaries compiled for Scientific Linux on Ubuntu?

Can I use binaries compiled for Scientific Linux on Ubuntu? I need to use library called ROOT in old version (released in 2010), but can't find binaries for Ubuntu.
1
vote
1answer
38 views

Run computer as root without terminal [duplicate]

I have a lamp project and I can't move my project in the file I'm supposed to move unless I do it from terminal as root, and then it doesn't let me open the project and change it, I have a lots of ...
6
votes
1answer
127 views

Why does `reboot` and `poweroff` work without super user privileges in Ubuntu 16.04?

There already are a lot of questions about why shutdown and reboot require root privileges. There are many good answers available too. Why do we need to be root in terminal for shutdown and restart? ...
1
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1answer
59 views

Can't give write permissions to /root?

I am trying, and failing, to give the user jenkins write access to /root. Firstly: Yes, this is not something you would normally recommend doing. But for some reason Jenkins is insisting on writing ...
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votes
1answer
41 views

Changing the root user of MySQL [closed]

How do I change my root user to any other local user on mysql db?Since I have installed Ubuntu all the work is done by this superuser root now just don't want root to do all stuff of mysql...
0
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2answers
36 views

Permission difference between root root and www-data root

-rw-r--r-- 1 root root 1502 May 14 23:06 beamingweb.css -rw------- 1 www-data root 894 Mar 28 01:10 icon.ico What is the permission difference between these two files?
0
votes
1answer
30 views

How to run a C++ program in python as a root? [closed]

I want to run a C++ program at boot with root privileges, I could not find how to do it. import subprocess def run_c_program(); subprocess.call("/home/pi..../example") When I run the ...
0
votes
0answers
28 views

Enigmail in Thunderbird works only with root

Hi I have a problem with in Thunderbird with enigmail and pinentry-qt4. I went through several tutorials and forums and followed all the steps. Now I found out that it works fine when I run ...
0
votes
0answers
34 views

Lost my 5 years old ubuntu partition and testdisk is no help

I try to extend my small 5g ubuntu partition in my dual boot computer but I lost all my root partition. I can now boot to windows but the root partition of ubuntu is lost and testdisk does not help. ...
0
votes
2answers
56 views

What does the “sudo” command do, and its usage mandatory?

I run my terminal commands as root but sometimes some programs (e.g., Tor Browser) say "The Tor Browser Bundle should not be run as root. Exiting." I want to understand whether this command is ...
0
votes
1answer
74 views

Mariadb non-root user

I have installed mariadb and when as a Linux root user, I can run mysql command to access the database. But when I try to login as a normal Linux user and run mysql -u root -p, I am getting error: ...
0
votes
1answer
20 views

Grub C Code in “set” output?

i made an interesting discovery. When i run set as root the output displays some c code... it seems like some grub boot-loader code.. followed by some unreadable parts. That seems a bit ... wired to ...
3
votes
1answer
45 views

Increase Root Partition Size

I want to increase size of my root partition dev/sda1 but I'm not able to do so either with GParted or with Terminal. On Terminal It gives the following error: The filesystem is already 4718592 ...
1
vote
2answers
36 views

Deleting 'core dump' folders/files in root partition for space

On trying to upgrade my system, I keep getting a message that I need to free up space in the root partition. Here's the situation: Filesystem Size Used Avail Use% Mounted on /dev/sda5 ...
2
votes
2answers
329 views

mysql don't ask for root password when installing

I use apt install mysql-server to install MySQL on Ubuntu 16.04 but during the installation, it does not ask for root password .After installation it had ERROR 1045 when i tried to login as root ,...
0
votes
2answers
33 views

Accessing Downloads Folder Through gksu

For some reason when I installed PyCharm, it left all the .exe and the such files in my Downloads folder. I want to move this PyCharm folder to my /opt file, but I need root access. How can I run gksu ...
0
votes
0answers
21 views

Sensor mounted in /dev for root root

I have a picoflexx that I want to use on my computer. When I run the camera visualizer, I get an error that camera could not be found/accessed. When running the visualizer with sudo, it works. I ...
0
votes
1answer
37 views

How to login with root user? [duplicate]

I'm trying to do a login in my Ubuntu, but I can't: I read Q&A about enabling root user, but how I can do it without a sudoer user? How can I add a sudoer user without having root access? I ...
1
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0answers
59 views

I have no idea about how the following lines ended up in my root's .bash_history?

-----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) iJwEAQEKAAYFAlb7STMACgkQh7sHtMmeQOHEcQQAorwdGYtbPMN8aS5hM0hvhy+O s7vxpbSdfvKHVskYUiml0UvC3zhA3cyqMjiKHpnOR4Zhaq4esrPcbHQSzJbn4vGn lW2+...
0
votes
1answer
16 views

Remove files created through mount & owned by root

So, I have been doing some trial & error learning about bind mounts in Ubuntu Desktop 14.04... I got everything working the way I wanted it, but as a result of my trial & error learning the ...
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votes
1answer
37 views

Not able to ssh as root on 14.04.2

I have done all the workarounds, yet, I am still not able to ssh as root. I have already modified PermitRootLogin to yes, and I have reset ssh services. I have even rebooted the VM, but it is just not ...
0
votes
1answer
313 views

Installing Ubuntu Server 16.04 on Vmware

I am installing Ubuntu 16.04 virtual machine on an Intel server using vmware. For some reason, it is creating the root file system as ext4 but I NEED it to be ext3. Is this possible? I have been ...
0
votes
1answer
26 views

Getting to root [duplicate]

I've checked the question archive and can't find an exact answer to the following. I have just installed Ubuntu on a new PC. While I'm fairly proficient in lumbering about in MSs operating console, ...
0
votes
1answer
29 views

xhost command in script fails when executed by initctl

For some reason, I have to execute xhost +SI:localuser:root to allow GUI for root user. I have put this command in a shell script, which will be executed at startup by upstart. When I execute this ...
0
votes
0answers
28 views

Kernal Panic, unable-to-mount-root-fs-on-unknown-block0-0

I am on ubuntu 15.04. I got stranded on a error like mentioned above. Tried recovery mode from Advance options, still getting same error. I also tried running it from live cd, I get the same error ...
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0answers
20 views

Recovering from chown -R / … update-manager not working and throwing errors [duplicate]

I messed up and ran chown -R username:username / by accident. I rebooted into recovery mode to get root privileges back and did the following... mount -o remount,rw / to get write permissions, then ...
13
votes
2answers
4k views

What is the name of the security concept that explains why Linux asks for root password?

Whenever I'm installing new software or making changes to the system, Linux asks for the root password. What is the name of this security concept and where can I research more information about it?
0
votes
1answer
34 views

How can I get access to the folder

i recently install Ubuntu 15.10 after windows 10 now my problem is that i do not have permission to delete or move any file or folder. please help me with this
0
votes
1answer
39 views

Dropbox fail in Ubuntu 12.04

I tried installing Dropbox in Ubuntu 12.04 in the computer that is provided by my university. I do not have root privileges. I tried to install it through Ubuntu Software Center. When I did a reboot ...