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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9
votes
3answers
17k views

Error after sudo-ing “sudo: must be setuid root”

On a colleagues computer, everytime I use a sudo command, I get this error: sudo: must be setuid root I tried various things mentioned on the internet, like changing the permissions to 4755 from a ...
9
votes
1answer
11k views

How to run a command as a user whose login is disabled?

I am trying to use the su command to run an application as another user In this case I am trying to run irssi blah@ubuntu: su - [username] irssi (enter password) blah@ubuntu: (nothing happens) ...
9
votes
3answers
9k views

How do I run eclipse as sudo

I've read that it's bad to run gui applications from a terminal using sudo. In order to administer some eclipse updates, I need elevated privileges (view screenshot). How do I do this correctly?
9
votes
1answer
7k views

rm: cannot remove `/run/user/root/gvfs': Is a directory

Whenever I type a command which is similar to sudo apt-get install or anything like this I get this kind of error: $ sudo su # exit exit rm: cannot remove `/run/user/root/gvfs': Is a directory How ...
9
votes
2answers
148 views

Run only parts of a script as sudo, entering password only once

I am writing a script (actually a combination of scripts and makefile) that installs external dependencies: some apt-get commands, some git cloning, building, installing, adding users to groups, ... ...
8
votes
3answers
7k views

Home folder in `root` and not in `home`… I'm confused!

I have an issue with my home folder and this are giving me some permission problems. I've installed an application that tells me that I have no permission to save in /home/username/Desktop, but in ...
8
votes
3answers
19k views

No password prompt at sudo command

Whenever I issue command sudo apt-get install ** it does not ask for password, not in my admin user too. How to make it prompt for password? My sudoer : ubuntu:~$ sudo cat /etc/sudoers # # This ...
8
votes
1answer
1k views

How to check if sudo password has been entered for this terminal session?

As said in the headline, I need to check if the sudo password has been entered for this terminal session in a shell (aka, if I have sudo rights now). If I have it, I would like to do one thing and if ...
8
votes
4answers
15k 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 ...
8
votes
1answer
592 views

how come sudo give root privileges for a user not in /etc/sudoers?

I just wonder how sudo privileges are found with ubuntu, from a technical point of view. Users with sudo privileges are not present in /etc/sudoers, so this looks a little bit exotic. Was the source ...
8
votes
1answer
2k views

Why should I use gksudo for Gtk apps instead of sudo? [duplicate]

I read somewhere that people should use gksudo for applications that use the Gtk GUI instead of sudo? What's the reasoning for this?
8
votes
3answers
10k views

Save an edited file in nano, but no permissions

I edited a file in /etc/ that I want to save, but forgot to open it using sudo. I remember there was a command to save such a file in vi, and want to know if there is any such way to do it in nano? ...
8
votes
2answers
11k views

Enable passwordless sudo as a specific user

I have two users on my system: itsadok, my main user, and elasticsearch, a user with a different ulimit for running ElasticSearch. I would like to be able to run stuff as the secondary user without ...
8
votes
1answer
4k views

How to use a python virtualenv with sudo?

I am trying to make a python environment separate from the system one (using virtualenv) in a directory which is not under /home, because I need to use it to build other software that has to be ...
8
votes
4answers
663 views

sudo doesn't ask for a password, even after multiples reboots

I haven't edited my sudoers, but I don't have to enter the password when running sudo in the command line. I can run any sudo command without entering the password, by just opening the terminal, even ...
8
votes
1answer
278 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: ...
7
votes
5answers
2k views

How can I get sudo to accept my password?

I am trying to install subversion on my Ubuntu 12.04 desktop. I follow the commands to start this process, using apt-get: sudo apt-get update sudo apt-get install subversion Either of the above ...
7
votes
1answer
7k views

Cannot echo “hello” > x.txt even with sudo? [duplicate]

Possible Duplicate: sudo & redirect output I'm trying to create a file in /var/www, but even with sudo this fails: user@debVirtual:/var/www$ sudo echo "hello" > f.txt -bash: f.txt: ...
7
votes
3answers
16k views

Mounting filesystem with special user id set

I want to mount the device /dev/sda3 to the directory /foo/bar/baz. After mounting the directory should have the uid of user johndoe. So I did: sudo -u johndoe mkdir /foo/bar/baz stat -c %U ...
7
votes
4answers
52k views

'Some index files failed to download' while updating

When running sudo apt-get update I get these following errors: Err archive.ubuntu.com quantal InRelease Err archive.ubuntu.com quantal-updates InRelease Err archive.ubuntu.com quantal-backports ...
7
votes
2answers
22k views

Can I add myself to group `root'?

$ id uid=1000(kev) gid=1000(kev) groups=1000(kev),4(adm),24(cdrom),27(sudo),30(dip),46(plugdev),109(lpadmin),124(sambashare) $ ls -l /etc/sudoers -r--r----- 1 root root 723 Jan 31 2012 /etc/sudoers ...
7
votes
5answers
17k views

How do I fix a “E: The method driver /usr/lib/apt/methods/http could not be found.” error?

I tried updating my packages from the terminal and this is what I got: $ sudo apt-get update E: The method driver /usr/lib/apt/methods/http could not be found. E: The method driver ...
7
votes
2answers
7k views

How can I get an interactive shell as another non-root user?

I'm using Ubuntu 10.04 LTS server, with the default security model (root locked, using sudo to elevate privileges). I occasionally enjoy using sudo -i when I'll need to run a series of commands with ...
7
votes
1answer
370 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 ...
7
votes
5answers
2k views

Change sudo timeout under fish

I want to change sudo timeout, so I edit sudoers via visudo (as adviced in many tutorials online) to the following form: Defaults env_reset , timestamp_timeout=20 root ALL=(ALL:ALL) ALL %admin ...
7
votes
3answers
4k views

How to run a Desktop graphical application just once under sudo?

For example, I'm trying to run Archive Manager from Ubuntu Desktop (10.04) under sudo otherwise it won't let me extract a Software Development Kit into /usr/local Update: I don't want sudo to be a ...
7
votes
3answers
18k views

How to execute sudo commands with Expect & send commands in bash script?

Can any body let me know how to execute sudo commands with expect. I tried the following but this is not working. Can anyone give me suggestion please? set login "sasuke" set addr "hostname" set pw ...
7
votes
2answers
10k views

Root's .bashrc not executing on sudo -i

On one of my Ubuntu 11.10 servers, when I use sudo -i to become the root user, root's .bashrc is not being executed. On all other servers, whose relevant configurations are identical as far as I know, ...
7
votes
1answer
462 views

For what duration is sudo_root in “don't-prompt-for-password” mode?

The first time a user enters sudo foo, sudo_root prompts for the password. For a certain duration after that, sudo_root doesn't prompt for a password for any subsequent sudo foo's in that terminal ...
7
votes
1answer
264 views

Why superuser don't have global menu integration? [closed]

In Unity, when running an application as a superuser, the menu is in the old-style. It's not integrated in the global menu. Why?
7
votes
1answer
322 views

How disable mysql command in sudoers file?

How can I disable /usr/bin/mysql command in sudoers file? I've tried to use it this way: %tailonly ALL=!/usr/bin/mysql But when I access user 'tailonly' of group 'tailonly', this command is still ...
7
votes
1answer
668 views

Is it safe to run a GUI program as another user?

I need to run a program (libreoffice) as another user. I noticed that the program started in the background when invoked as kdesudo -u otheruser libreoffice, possibly to avoid social engineering ...
7
votes
1answer
237 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 ...
7
votes
0answers
10k views

Can I run sudo without entering a password? [duplicate]

Possible Duplicate: How to run an application using sudo without a password? I like Ubuntu, but I hate entering a password every time when I run a command with sudo. Can I avoid it?
6
votes
7answers
2k views

Is the command `sudo rm /Desktop/filename` safe?

Is this safe to use? sudo rm /Desktop/FILENAME The reason for wanting to use sudo is I can't see the file. I accidentally typed in sudo rm /Desktop/index.html. It didn't find it but could ...
6
votes
2answers
5k views

Password not working in Graphical Applications (gksu)? Works with sudo

I am having a problem where when I try to run say GParted, when I am prompted for a password, it says "Incorrect Password" But when I enter the same password using terminal sudo gparted for example, ...
6
votes
4answers
18k views

Sudo doesn't work

I edited my sudoers file in /etc and after that I can't use sudo anymore. I get this whenever I issue the command: sudo: >>> /etc/sudoers: syntax error near line 30 <<< sudo: parse ...
6
votes
2answers
6k 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 ...
6
votes
4answers
124k views

how to use sudo command to install .tar.gz? [duplicate]

Possible Duplicate: How to install a .tar.gz (or .tar.bz2) file? I am newbie to ubuntu. I would like someone to explain how to use sudo command to unzip & install .tar.gz file to me.
6
votes
4answers
17k views

Deleted Myself from Admin Group - Now Getting Error usermod: cannot lock /etc/passwd; try again later [duplicate]

Possible Duplicate: Cannot lock '/etc/group' in recovery mode I have a laptop with Ubuntu 11.10 that is shared between myself and two other family members. My user id was setup as ...
6
votes
2answers
46k views

Launch Sublime Text 2 from terminal [duplicate]

I am new to Ubuntu and is trying to configure my environment so i can launch Sublime Text 2 directly from the terminal. I followed the solution on this post but no luck so far. These are steps I did ...
6
votes
2answers
23k views

Cannot connect to X Server when running app with sudo

When I am running some software using sudo command it showing error like cannot connect to X server For example if I run the following command: $ sudo gedit /etc/profile I am getting ...
6
votes
1answer
905 views

How to configure pkexec to not ask for password?

I have a GUI application that needs to call a daemon (written in Python) with superuser privileges. I would like to do this without prompting the user for a password. Since the daemon is a script, I ...
6
votes
2answers
10k views

How to solve “sudo: /etc/sudoers.d is world writable”

How can I fix the following error with sudo? /etc$ sudo sudo: /etc/sudoers.d is world writable usage: sudo [-D level] -h | -K | -k | -V usage: sudo -v [-AknS] [-D level] [-g groupname|#gid] [-p ...
6
votes
1answer
3k views

sudo su doesn't change users for mysql

Last night, on my server, I did: sudo su - mysql to change to the mysql user so I could run the mysql client, which is set up so it will only authenticate from the mysql account. I successfully ...
6
votes
6answers
4k 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 ...
6
votes
2answers
2k views

How can I ensure the `snd-hda-intel` module is loaded on startup?

I need to type sudo modprobe snd-hda-intel in order to get my sound card to work. What config file do I need to edit and what edit should I be looking to make so I can get the sound driver loading ...
6
votes
1answer
5k views

Errors followed by command “Sudo nautilus”

I have opened Nautilus with root power to delete some items.When I typed Sudo nautilus,the particular window opened up,but some errors also came along with it as following: meego@meego-Notebook-PC:~$ ...
6
votes
2answers
307 views

To be granted root rights while browsing files/directories with Nautilus 2.30

I'd like to know if there a way to be granted root rights while using Nautilus 2.30 ? For example I'd like to move some old folders of long unused users from the home directory - remains of previous ...
6
votes
1answer
3k views

What is the equivalent of gksudo in Kubuntu/KDE?

In regular Ubuntu (Unity/Gnome), I use gksudo to run GUI programs with root privileges. I'm trying out Kubuntu (or KDE) now -- what do I use?