Questions related to the sudo command that allows users to run programs with the privileges of a different user (normally the root user).

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25
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5answers
5k views

What's wrong with using sudo?

In a comment here I've been told that unnecessarily using sudo should be avoided. While it wasn't needed in that particular case, I don't see any harm in using it. I think that when executing trivial ...
0
votes
1answer
35 views

User stopped being sudoer after release upgrade

I've upgraded one of web server, that was running Ubuntu from 11.10 to 12.04 (No downtime since it's creation, though serving 10-40k requests/daily). sudo apt-get install update-manager-core ...
0
votes
0answers
23 views

Cannot execute sudo command without correct password (Even though my account has no password). Why? [duplicate]

My account on my computer does not require a password, and I have admin privelages. As I understand it, so I'm trying to run sudo [...] and getting the following result when leaving the password field ...
1
vote
1answer
50 views

Asking for a sudo password in advance

I have some scripts for backing up data. Some of them need root access, so I use them with sudo. However, sometimes I get confused, e.g. for the mySQL backup, which also needs a mySQL root password. ...
0
votes
1answer
55 views

How can I have Wicd connect to my wireless network without having to enter a password?

In the context of my earlier deleted question below: Everytime I run WICD (Network Manager) it requires my password for permission. I'm not against Ubuntu asking for passwords in general but ...
0
votes
0answers
28 views

Whitelist a program as admin

Everytime I run WICD (Network Manager) it requires my password for permission. I'm not against Ubuntu asking for passwords in general but everytime I log in is a little excessive. Is there a way to ...
9
votes
1answer
776 views

How could I have dropped out of sudoers? [duplicate]

I started to receive a message dims is not in the sudoers file. This incident will be reported. about myself. How could this happen? The suspicious command I made was creating group "advanced" ...
1
vote
0answers
46 views

How to disable mpm-itk for a specific virtualhost?

I've a main site on a server that needs to run a sudo command which I white listed via visudo. That worked fine until I installed apache-mpm-itk and then I started getting the following error: sudo: ...
0
votes
0answers
97 views

When running a shell script using sudo I am getting no tty present and no askpass program specified

I am trying to build a project using jenkins. The project is based on node. I wrote a shell script that has only npm install command. I am running the shell script from jenkins as sh ...
0
votes
0answers
171 views

My ubuntu is broken, error with gksu!

I keep getting this when is use gksu nautilus: shonn@shonn-Satellite-A505:~$ gksu nautilus Nautilus-Share-Message: Called "net usershare info" but it failed: 'net usershare' returned error 255: net ...
0
votes
0answers
12 views

How do i give the anonymous pipe to a file root privileges [duplicate]

If i go the a root owned directory (let's say root) and type: sudo echo test > test i get the following error: bash: test: Permission denied So the pipe does not keep the same user as the ...
1
vote
1answer
29 views

Enable NOPASSWD without manual interaction

I need to enable NOPASSWD for one user across 60+ hosts. I've only ever enabled it manually, using visudo. Is there a way to script this? I can easily log into all hosts as root, but I'm not sure if ...
1
vote
0answers
55 views

sudo command not working

When I try to use the command sudo mountall, the following error message appears: sudo: unable to open /var/lib/sudo/username/1: No such file or directory So how do I solve this?
7
votes
1answer
326 views

How can I change the number of password entry attempts allowed by sudo?

By default, sudo prompts me to input my user password a maximum of three times if I input wrong password. How can I change it to unlimited times(?)? How can I make it so that it asks me for my ...
4
votes
0answers
297 views

Why does hd-idle need sudo to run in rc.local?

I have added a command that runs "hd-idle". It seems to need to run as root as otherwise it does not spin down the drives as instructed. Behavior seems to be the same when executed manually or via ...
-1
votes
1answer
43 views

How do I access my window's files? [duplicate]

I recently replaced the Windows by Ubuntu and I have any files in my Disc. When I had Windows. How Can I Do to access $ sudo fdisk -l to I to recover my disc?
6
votes
1answer
231 views

Access to /dev/ttyUSB0 and sudo

This is my first question here. I am running Ubuntu 12.04 and have an application accessing the USB port of computer. My Ubuntu username is gadu. Until today, i've always used the following command: ...
16
votes
1answer
1k views

What does su > echo “<username>” mean?

When I was entering the command su > echo "sachin" it was asking for a password. When I gave my password, some strange things happened as you can see: One more thing: there is another user, ...
0
votes
1answer
64 views

How do i get permission to edit a file in /etc/? [duplicate]

I'm trying to modify a file from /etc/ but I can't, because the file I want to modify require root permission and I accidentally erase it. I tried to use some sudo commands but I can't because every ...
0
votes
0answers
44 views

Sudo is working without password? Is this a bug? [duplicate]

sudo commands are running without any passwords. I had not made any setting to make something like "sudo without password" This view show how sudois running without prompting for password ...
-1
votes
1answer
53 views

Problem with Swap file Ubuntu 14.04

I have created a new user, write on /etc/sudoers - echo '<USERNAME> ALL=(ALL:ALL) ALL' , then I login my new user, and try to swap files with the following command: sudo dd if=/dev/zero ...
1
vote
1answer
565 views

Why does node.js need administrative permissions to access my windows share even though the share's premission is 0777

I have Ubuntu 14.04 running as a VMware guest on my Windows 8.1 host. I have shared a folder on my Windows Host and it is mounted in the Ubuntu guest on startup using this entry in fstab: ...
2
votes
1answer
65 views

How to find out which programs are taking up alot of memory?

I've been getting messages that I have exceeded my quota limits. I am new to Linux and am not sure what to do. With windows, I could easily just go to Control panel, add/remove programs, and uninstall ...
1
vote
0answers
45 views

GUI anthentication doesn't work. No privileges

This is on Xubuntu 14.04 64-bit After a forced restart (due to nvidia overheating) I noticed that no sound was playing, and in fact pulseaudio showed only dummy devices. While looking for a solution, ...
0
votes
2answers
214 views

ERROR 1045 (28000) on mysql-server installation [duplicate]

I am new to Ubuntu trying to install MySQL. sudo apt-get install mysql-server php5-mysql then to create database directory structure sudo mysql_install_db Then to secure I use sudo ...
-1
votes
1answer
49 views

Ubuntu 14.04 'sudo' and networking not working

I upgraded to Ubuntu 14.04 today and I have two problems 1) When ever i do 'sudo' followed by a command the system just stalls, nothing from 'sudo ls' to 'sudo apt-get install ... ' etc works. The ...
0
votes
2answers
52 views

How to change permission of a drive in an external hard disk?

I had an old laptop. When it got complaint I removed its hard drive and started using it as external hard disk. It has an 80 GB of memory allocation for the windows C drive partition. But now i don't ...
1
vote
0answers
381 views

Ubuntu 14.04 - Jenkins User NOPASSWD configuration

I'm trying to make my jenkins user able to execute a script with www-data user so I've tried adding jenkins ALL=NOPASSWD:ALL at the end of my sudoers file but it didn't work, password was asked ...
0
votes
0answers
29 views

Questions about checking for badblocks on a almost-definate bad HDD, I am new to Ubuntu

Heres the deal, I'm on an Asus x53sv-mh71, it's my friend's laptop. He dropped it about a month ago, and it stopped working about a week afterward. Wouldn't boot past the "starting windows" logo. I ...
1
vote
1answer
136 views

How to get root permission inside qt program?

I run my QT app without sudo permission but during running phase of the app I need to install the .deb so I am running the command dpkg -i mydeb.deb with qprocess in QT or some other commands which ...
0
votes
1answer
118 views

Superuser 'permission denied'

I wish to run a script in the root directory. The script is /opt/poky/1.6/xx If I log in as a superuser in Ubuntu 14.04 using sudo -i and my own password, I can see this file using ls /opt/poky/1.6/. ...
0
votes
3answers
112 views

How to enable sudo passowrd?

I just installed Ubuntu 12.04 on a virtual machine in the Windows Azure Cluster. By default sudo is not requiring a password. I would like to force a password on all sudo commands. How do I go ...
5
votes
5answers
1k views

Should I use “sudo” before “make install”?

I am installing the latest FFmpeg from this guide: In some places it suggests performing make install without sudo, here is a single example of several: cd ~/ffmpeg_sources wget ...
4
votes
1answer
140 views

How to automatically opening terminal windows & tabs, ssh and sudo su?

When I start my day in front of my computer, I first have to do the following: In workspace 1: Open a new terminal window, ssh loginserver, then ssh serverA1 and sudo su account00 Open a new ...
-1
votes
2answers
152 views

account blocked by changing the /etc/passwd : how to revert or gain access again

To get root access to my existing account in ubuntu i followed this post. But even after following the steps mentioned i wasn't able to create/modify file or directory without using the sudo keyword. ...
1
vote
0answers
63 views

Why does sudo prevent catching SIGTSTP (Ctrl+Z)?

This program is written to catch SIGTSTP (Ctrl+Z) and bypass its normal effect, printing a message and returning to its normal operation instead of allowing its process to be suspended: ...
-1
votes
1answer
139 views

sudo chmod 755 /dev/sda7 -R simply returns a new command prompt line?

I am logged into my computer through the guest account, because i am unable to login through the master/admin. account via user interface. (Simply a blank, blue screen appears upon login.) So i'm ...
0
votes
2answers
81 views

How to properly detach a command?

I have this little script I use to launch a root Nautilus window (yeah, dangerous, but sometimes necessary): #!/bin/bash gksudo --description "Launch a root Nautilus" -- sh -c "xdg-open / &" ...
0
votes
2answers
70 views

How to save output to file that required root access [duplicate]

I want to save output of command to a file that my current user do not have access to. But my user can have root access using sudo. I'm running for example: sudo crontab -l > /var/BackUp/crontab ...
0
votes
1answer
63 views

Can't use sudo, gedit, i'm getting error in upgrading

sudo: unable to open /var/lib/sudo/username/7: No such file or directory W: Not using locking for read only lock file /var/lib/dpkg/lock E: Unable to write to /var/cache/apt/ E: The package lists or ...
-1
votes
1answer
320 views

Nano edit, permission denied

I am trying to edit a index.php by using sudo nano index.php. Nano opens me into index.php, then i add the code into the file, save and try to exit but it says permission denied. I am using ssh ...
-3
votes
1answer
73 views

Enabling root privileges permanently and have no password

I want to enable root privileges permanently so that, for example, I never need to type sudo. I also want a blank password. I found a thread addressing this with link Always Sudo Privileges. Exactly ...
1
vote
3answers
243 views

User in sudo group cannot use sudo command

I have a user, supersecretuser, that is in the sudo group, but doesn't have sudo access. Is there something else that needs to be done to give this user sudo access? $ ssh supersecretuser@myserver ...
2
votes
0answers
39 views

How do I remove sudo from my server without breaking everything?

I am creating a test server VM, and I would like to delete the sudo executable by deleting it via apt. I know the root password, so that is not a downside. Is there any problem about removing sudo ...
0
votes
1answer
32 views

Changing Administrator [duplicate]

Due to a mishap with my main profile I am wondering if anyone could assist me in making my secondary profile the administrator. Something went wrong with my primary profile and I can no longer see ...
1
vote
0answers
22 views

Lost premisssions after editing sudoers file [duplicate]

Please, can someone help me. The problem: I would like to give permissions to reboot for users not from admin group. On the Internet I found the advice to change the "sudoers" file with command ...
1
vote
1answer
425 views

How can I make Sublime Text 3 run as root from Unity?

I know I am not root because I cannot browse packages. First, I am aware of this page, but it is not working for me. After following those instruction, I get the prompt when I open Sublime from ...
0
votes
1answer
41 views

problem occuring while creating .exe file

I'm trying to run test problem in the mfix but got struck with an error sh: 0: Can't open ../../model/make_mfix. bhaskar@admin2-Precision-T7600:~/mfix/run/tests/Added_Mass$ sh ../../model/make_mfix ...
0
votes
1answer
63 views

Problem with adduser on new install

I am a noob trying to get an install of ubuntu 14.04 LTS up and running on a virtual server on linode. I have not done much on it yet. Earlier today I tried to add some users. I was able to add one ...
2
votes
1answer
80 views

If I use && to run two commands - do I need to put sudo in once or twice?

Suppose I have the following command curl -Lo .amb j.mp/docker-ambari && . .amb && amb-deploy-cluster (assuming this is running on vagrant - so not a real machine) And I know I've ...