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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10
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3answers
5k views

sudoers - simple explanation requested

Everytime I want to be able to run something that requires me to be a sudoer too many times, I need to google for the formatting of /etc/sudoers to remind me again what exactly is the proper way to ...
10
votes
3answers
680 views

Is there a desktop-neutral gksudo?

There are various tools for various desktops that aim to run a graphical application as root. gksudo, kdesudo, empower, etc... But what if I'm writing a script that could be used on any Linux ...
10
votes
1answer
983 views

Why does sudo ask for a password in window after I've just authenticated in a different one?

If I am using the command line in xterm, gnome-terminal, etc., I can keep sudo from re-prompting for a password, within some limits, or I can disable it. As a compromise between usability and ...
10
votes
2answers
507 views

how to be warned if terminal has sudo privileges and also show how much time is left?

How to see in the terminal that you have sudo privileges? (so knowing I have these privileges, I can just type sudo -k) It would be better to not add too much information into the terminal also, just ...
10
votes
2answers
6k 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 ...
10
votes
2answers
265 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, ... ...
9
votes
3answers
1k views

How to rename sudoers back to its original naming?

Today I made a big mistake, I run the command mv /etc/sudoers{,.bak} on my ubuntu machine and now sudoers file is missing This is the message given in terminal wherever I use sudo sudo: unable ...
9
votes
7answers
9k 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, its says to prevent unintentional damages for inexperienced users. I want to know ...
9
votes
3answers
3k views

Difference between cat and sudo cat? [duplicate]

Can you tell me what the difference is between cat and sudo cat? All I know so far is that cat is used for displaying contents of file and concatenation.
9
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3answers
492 views

sudo permission doesn't time out durring apt-get upgrade

Consider this: You type $sudo apt-get upgrade and get a list of things that need upgrading with a "Y\n" confirmation. before you can read the list, and type "Y" or "n", the phone rings, or your boss ...
9
votes
4answers
2k views

Why does echoing these parameters with sudo not work? [duplicate]

Possible Duplicate: sudo & redirect output These are suggestions given by powertop to save energy: echo 1500 > /proc/sys/vm/dirty_writeback_centisecs echo 1 > ...
9
votes
1answer
800 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" ...
9
votes
3answers
19k 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 ...
9
votes
3answers
18k 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
4answers
183k 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.
9
votes
1answer
13k 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
12k 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? ...
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
12k 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
9k 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: ...
8
votes
4answers
62k 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 ...
8
votes
3answers
8k 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
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 ...
8
votes
1answer
4k 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 ...
8
votes
3answers
21k 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
2k 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
3answers
12k 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?
8
votes
1answer
607 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
4answers
18k 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
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
2answers
11k 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, ...
8
votes
1answer
489 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 ...
8
votes
4answers
723 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
347 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
2answers
28k 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
2answers
65k 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 ...
7
votes
2answers
2k views

How do I make a sudo command start at start-up with a 1 minute delay?

I would like to make a sudo command (sudo service smbd restart) run after 1 minute of being logged on. How would I go about doing this? P.S. This is a system with no monitor, mouse, keyboard or ...
7
votes
2answers
8k 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
4answers
11k views

How to give shutdown privileges to a user?

I am using Ubuntu 11.04. I want to run a script which checks for a running process and shuts down the system when that process ends. To do this, the user requires shutdown access so that the script ...
7
votes
1answer
471 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
24k 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
1answer
273 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
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1answer
400 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
690 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
414 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
3k 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 ...