Questions tagged [visudo]

visudo edits the sudoers file in a safe fashion

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314 votes
18 answers
559k views

How to modify an invalid '/etc/sudoers' file?

How do I edit an invalid sudoers file? It throws the below error and it's not allowing me to edit again to fix it. Here is what happens: $ sudo visudo >>> /etc/sudoers: syntax error near ...
3 votes
4 answers
11k views

Change in sudoers does not take effect. Ubuntu 16.10 fresh install + one line.

Trying to remove password on sudo. My current sudoers file: Defaults env_reset Defaults mail_badpass Defaults secure_path="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:...
2 votes
2 answers
345 views

Why micro is not recognized as text editor in Ubuntu 22.04?

I installed micro with sudo apt install micro on 22.04 I want to use visudo with micro. export EDITOR=micro then next line visudo opens in nano. So, then I tried sudo update-alternatives --config ...
0 votes
0 answers
244 views

Sudoers, Specific Programs & Said programs arguments

I have a /etc/sudoers.d file which I want to run a program (asterisk) WITH arguments as a user (zabbix). So far I have tried: zabbix ALL = NOPASSWD: /etc/path/to/my/script.sh And zabbix ALL=(ALL) ...
0 votes
1 answer
256 views

My sudo password was completely showing on my terminal - Ubuntu 22.04

I'm using Ubuntu 22.04 on my laptop, on my PC is normal but with my laptop, everytime I input password for sudo it was showing on screen. I trying to edit in visudo but my password still showing on ...
37 votes
4 answers
22k views

Change the default editor when sudo visudo

When doing sudo visudo, the default editor is nano. I want to change it to vi or vim. I already made vim the default editor, and use it as a substitute for gedit to open php, .txt, .c and .h files,...
8 votes
1 answer
1k views

Difference between "select-editor" and "update-alternatives --config editor"

I'm looking at how Ubuntu selects a default editor, and I notice that to set the default editor for editing crontabs, I use select-editor while to set the default editor for visudo I use update-...
1 vote
1 answer
718 views

NOPASSWD option not working in sudoer file

I know this has been asked before, but I tried answers from dozens of other posts, and nothing is working. I've also used this on other servers successfully, so I'm not sure what I'm doing wrong this ...
0 votes
1 answer
61 views

In what line of sudoers do I put this?

%newgroup, !newuser ALL=(ALL:ALL)NOPASSWD:ALL, !/usr/sbin/iptables I have read that it is put at the end, but I am not sure about it
1 vote
1 answer
178 views

Allowing {USER} to run a command against a process owned by another user

I have been scouring the forums to find out how you can allow a command / process to be ran by a user that is normally only permitted by root or itself. There are some good resources out there but ...
3 votes
1 answer
2k views

systemctl still asking for password even with sudoers

My /etc/sudoers josh ALL=(ALL) NOPASSWD: /usr/bin/systemctl restart servicename.service running systemctl restart servicename.service still asks for password. Does anyone have any ideas? Running ...
0 votes
1 answer
182 views

I accidently removed visudo from /usr/sbin/ How do I recover it?

I was trying to install cypress in wsl. While I was following the official documentation of cypress to install in wsl, I accidently removed the visudo from /usr/sbin/ Without it I cannot install and ...
0 votes
0 answers
572 views

Visudo NOPASSWD not working on specific file

I'm trying to exclude one script I wrote from asking the password when executed, even if it contains a "sudo" command so i've edited sudoers through visudo adding myuser ALL=(ALL) NOPASSWD: ...
10 votes
3 answers
7k views

Why I must use 'visudo' to edit the '/etc/sudoers' file?

In /etc/sudoers, it says: # This file MUST be edited with the 'visudo' command as root. My question is, why must this file be edited with visudo? It seems I was able to edit the file successfully ...
2 votes
1 answer
628 views

sudoers doesn't work

I added powertop to /etc/sudoers (sudo visudo) but it doesn't work. I checked all possible problems I can imagine. What did I missed? user@ellie:~$ whoami user user@ellie:~$ groups user adm cdrom ...
2 votes
1 answer
2k views

`sudo visudo /etc/hosts` gives syntax errors

Really dumb question, Ubuntu 20, and I have apache2 installed, not much else. I go sudo visudo /etc/hosts and want to add an alias "dummy.com" domain alias as a hack to point to the server ...
0 votes
1 answer
216 views

Trying to tweak my sudo configuration

so I am trying to tweak my sudo configuration(sudo visudo -f /etc/sudo.conf) but unfortunately the following errors appeared ??? /etc/sudo.conf:16:22: syntax error Plugin sudoers_audit sudoers.so ...
-5 votes
1 answer
104 views

Why Ubuntu still hasnt fixed deleted passwords issue?

So after 6 years this question was posted I still ran into same issue. I did the followoing : myusername ALL=(ALL) NOPASSWD:ALL And it was going fine for some time so if I am installing any software ...
-1 votes
1 answer
80 views

visudo don't apply modifications

i'm on ubuntu server I'm trying to use a command sudo /usr/binsystemctl start myscript.service Without password. i want this command execute without ask password. I used sudo visudo and writed : ...
0 votes
0 answers
139 views

Ubuntu 21.04 Broke Passwordless SSH Shutdown

I recently had passwordless SSH shutdown and reboot working on Ubuntu 20.04, but after upgrading to Ubuntu 21.04 it no longer works. I have key based authentication set up correctly, and can ssh into ...
1 vote
0 answers
50 views

Allowing a sudo command to run without needing password [duplicate]

I have the following command: sudo service cron start When I type it into the terminal, it asks me for a password, just as it should. But I need for users (or if all users aren't possible, then at ...
1 vote
1 answer
635 views

timestamp_timeout in Ubuntu doesn't work

I use ubuntu 14.04 and I tried to change sudo password timeout but change made to it doesn't work. Please help , My visudo file looks like this. GNU nano 2.2.6 File: /etc/sudoers....
0 votes
1 answer
1k views

How to give passwordless sudo through automated script

Anyone who has used Multipass or AWS is familiar with the ubuntu user who has passwordless sudo access. I am launching multiple virtual machines via multipass each with many users and I want ...
0 votes
1 answer
322 views

How to bypass sudo password for everything inside a script?

I have a PADD setup on my Raspberry Pi 3 running on Ubuntu Server 20.04. I can successfully bypassed sudo password authentication by adding: pihole_display ALL=(ALL) NOPASSWD:ALL But when I try to ...
4 votes
1 answer
862 views

user not in sudo group but can perform sudo operations

Is this normal behaviour when I put a user student in sudoers file using visudo command like this : visudo student ALL = NOPASSWD: ALL And he is not in sudo group but can still perform sudo ...
0 votes
1 answer
88 views

Configure sudo for UserA to run commands as UserB (not root)

I have some automated tools that need to be able to run as a specific user. The username is "ig_root" and it is only used by a monitoring tool (checks disk space, database, CPU workload, etc)...
0 votes
2 answers
3k views

Give root permissions to new user

I have created a "normal" user with sudo privileges, lets say newuser. I created with the GUI Users and Groups and created as administrator. If i want to install a new program or whatever ...
0 votes
2 answers
1k views

How to run "systemctl" + $ + "apache" $=stop,start,restart as non sudo/root user?

Yeah basically the title, I want to do that things from a app that can run Linux scripts per SSH. I only want to run these three and not ALL from systemctl with my basic user. So thanks.
18 votes
1 answer
4k views

Get email notification for using 'sudo' by a specific user

I have a server set-up and I let somebody that I trust with a little bit of sudo access have it. However, I also want an email anytime that they use sudo. I know that I can use Defaults ...
1 vote
1 answer
181 views

Messed up the sudo access!

Not sure if this is the place for troubleshooting, but I am gonna give it a shot. I was trying to make my computer turn off without needing sudo, and I must have done something wrong because I get a ...
1 vote
1 answer
2k views

Adding my user to sudoers does not work. Still ask for password

I have a fresh install of Ubuntu 18.04 I made the mistake of editing /etc/sudoers with "vim" first instead of using "visudo". Therefore when I was doing "sudo command" it kept asking for my password. ...
0 votes
1 answer
971 views

user is not in the sudoers file

Once configured my VM with Ubuntu 18.04 and joined to an AD domain, when trying to do sudo operation with my domain user, the error message is always: "domainuser is not in the sudoers file. this ...
0 votes
1 answer
563 views

What should /etc/sudoers contain normally? [duplicate]

When I run sudo visudo , what should it contain? Please give me an example of what it should have normally for a sudo user.
0 votes
1 answer
1k views

a change with visudo doesn't work

I issue visudo command, add this rule to the very end of the file, save the file and quit. newuser ALL=/usr/sbin/useradd However newuser is still able to run such commands as sudo passwd ...
1 vote
1 answer
748 views

How can I run a sudo command as sudo (!) without password? (cryptsetup needs to be run as sudo in order to use kernel module 'device-mapper')

Solved Besides not commenting the #includedir line in /etc/sudoers out, editing sudoers.d/myOverrides with sudo visudo -f /etc/sudoers.d/myOverrides, and using the syntax I first tried, did the ...
4 votes
1 answer
24k views

Add user to sudoers

I want to add a user account to sudoers. I type in sudo usermod -aG sudo username Then I reboot. I type apt update I get permission denied. I type sudo apt update Followed by account ...
1 vote
0 answers
640 views

Root user access for another user [duplicate]

I am trying to gain root user access to another user so that I can run a command with adding sudo in front of any command. Example: fdisk -l Getting the error message as: fdisk: cannot open /dev/...
0 votes
1 answer
1k views

/etc/sudoers is owned by gid 33, should be 0, and when I try pkexec I get "authentication failed"

I was trying to get access and write permissions to my apache sites-available folder over ssh/sftp. I didn't really understand what I was doing to be honest and ran the following commands: $ sudo ...
0 votes
1 answer
1k views

Can't grant myself permissions to execute `rm` command as sudo

I have a user account on my machine: $ (whoami) > foo_user I've updated by /etc/sudoers file to grant myself permissions to use the rm command: User_Alias OPERATORS = foo_user Cmnd_Alias ...
3 votes
4 answers
9k views

How to allow a command to be executed for a particular user without password with sudoers file?

Can anyone please explain the exact work of these in /etc/sudoers ? (I've done some research, so please don't share any links) I want to add myself (member of sudo) to execute a command without ...
1 vote
1 answer
584 views

Can I edit the sudoers file with visudo using my bootable USB

Something I did with a sudo dpkg ... installation in an attempt to fix problems with my audio clobbered my ability of my sole user-name to run sudo in 18.04 LTS (Bionic Beaver). This is a single OS ...
2 votes
2 answers
6k views

Can't run visudo within Docker; sudoers file does not exist

Ubuntu n00b here. I am tinkering with a Docker container that I created using the following simple Dockerfile: FROM ubuntu CMD ["tail","-f","/dev/null"] Inside the container, as the root user, I try ...
1 vote
1 answer
1k views

I have somehow locked or removed my access to sudo - how can I fix it? [duplicate]

I am fairly new at Ubuntu system and commands. I was trying to follow some tutorial online explaining how to setup using no password to download apps. I was in visudo, and next thing I know I can't ...
1 vote
0 answers
491 views

In which cases multiple hostnames are set/uses with sudo

My computer has a label/hostname, let's say learn_linux. In the /etc/sudoers the format is: user ALL=(ALL:ALL) ALL %group ALL=(ALL:ALL) ALL the first field -> user, %group is referring to ...
0 votes
1 answer
74 views

Configure a group to change date via GUI without admin privileges

On Ubuntu 16.04, I would like to create a group of users, named "group_1", without admin privileges who would be able to change the date. To do so, I use the command visudo and add the line : ...
211 votes
2 answers
227k views

How to change visudo editor from nano to vim? [duplicate]

When I use visudo, it always opens it with nano editor. How to change the editor to vim?
0 votes
1 answer
881 views

how to edit sudoers file and pass a file which contains list of commands instead of commands list in sudoers file

I need to edit visudo file to allow users to access certain commands. If i edit visudo file to add some commands, then i have to edit visudo file very frequently . Instead of editing visudo file I ...
0 votes
0 answers
413 views

WSL: visudo -c complains "parse error"

I'm having a problem trying to set a sudoer file in WSL. So, I created a file /etc/sudoers.d/wheel containing the following one line: %wheel ALL = NOPASSWD: (ALL:ALL) ALL But whenever I run visudo ...
0 votes
0 answers
460 views

How can I configure visudo to run a script with root privileges for a non root user?

I need than a deployer (member of group deploy) can run some scripts with root priviegies. But I dont want that deployers can run anythig. I try this. With a root user I do: ~$ echo "touch /opt/expe/...
0 votes
1 answer
2k views

Allow nopasswd sudo for specific user

I am trying to set the scp as a specific user with NOPASSWD. alice ALL = (bob:ALL) NOPASSWD: /usr/bin/scp As I did understand from this question. However when I save using my visudo I still can't ...