How to run sudo command with no password?

Posted by aychedee on Ask Ubuntu See other posts from Ask Ubuntu or by aychedee
Published on 2012-09-23T09:30:23Z Indexed on 2012/09/26 9:52 UTC
Read the original article Hit count: 215

Filed under:

sudo

|

aws

tl;dr: How does the ubuntu user on the AWS images for Ubuntu Server 12.04 have passwordless sudo for all commands when there is no configuration for it in `/etc/sudoers'?

I'm using Ubuntu server 12.04 on Amazon. I want to add a new user that has the same behaviour as the default ubuntu user. Specifically I want passwordless sudo for this new user.

So I've added a new user and went to edit /etc/sudoers (using visudo of course). From reading that file it seemed like the default ubuntu user was getting it's passwordless sudo from being a member of the admin group. So I added my new user to that. Which didn't work. Then I tried adding the NOPASSWD directive to sudoers. Which also didn't work.

Anyway, now I'm just curious. How does the ubuntu user get passwordless privileges if they aren't defined in /etc/sudoers. What is the mechanism that allows this?

© Ask Ubuntu or respective owner

Related posts about sudo

Error after sudo-ing "sudo: must be setuid root"

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
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 live cd, but even this command from a live-cd sudo chmod 4755 /media/device/usr/bin/sudo gives the… >>> More
any clue in these logs why keyboard audio and internet are messed up

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
Jun 7 00:01:18 Isis lightdm: pam_unix(lightdm-autologin:session): session opened for user mimi by (uid=0) Jun 7 00:01:18 Isis lightdm: pam_ck_connector(lightdm-autologin:session): nox11 mode, ignoring PAM_TTY :0 Jun 7 00:01:26 Isis polkitd(authority=local): Registered Authentication Agent for… >>> More
Sudo yum seems to fail on CentOS, but works fine after sudo -i

as seen on Server Fault - Search for 'Server Fault'
I am currently having some trouble with yum through sudo. For some reason, it does not seem to work: aron@graviton [/var/log]# sudo yum clean all There was a problem importing one of the Python modules required to run yum. The error leading to this problem was: /usr/lib64/python2.4/lib-dynload/datetime… >>> More
sudo in Debian squeeze inside linux-vserver always wants password

as seen on Server Fault - Search for 'Server Fault'
Every since I upgraded all my linux-vserver Debian guests from Lenny to Squeeze I've the apparent problem that whenever I want to use sudo it asks me for my password. Every time. I've configured sudo to have a timeout of 30 minutes: Defaults timestamp_timeout=30 . This has been configured when it… >>> More
Ubuntu - Security - Sudo disable password :: What difference in security if sudo will not requere pa

as seen on Super User - Search for 'Super User'
Hi, What difference in security of UBUNTU if sudo will not require password? Thanks >>> More

Related posts about aws

How do you transfer AWS RDS snap shot to a different AWS account

as seen on Server Fault - Search for 'Server Fault'
Hi I have an RDS database that I need to transfer a snapshot of to another AWS account. I understand there are issues being able to do this between availability zones so I'm really unsure if this is possible. The RDS instance is mySql. If it's not possible to transfer the snapshot please could… >>> More
How do I use XML prefixes in C#?

as seen on Stack Overflow - Search for 'Stack Overflow'
EDIT: I have now published my app: http://pastebin.com/PYAxaTHU I was trying to make console-based application that returns my temperature. using System; using System.Xml; namespace GetTemp { class Program { static void Main(string[] args) { XmlDocument doc… >>> More
need help with automating a CMD java tool whcih qurries alexa AWS using batch

as seen on Server Fault - Search for 'Server Fault'
Hi everyone, I need to get all available info on 600 URLs from "Alexa Web Information Service", I downloaded the java tool and I'm able to run a single query each time with a single switch/Response Group. I would like to ask how to write a batch file that would automate the process ? the java tool… >>> More
need help with automating a CMD java tool which queries alexa AWS using batch

as seen on Server Fault - Search for 'Server Fault'
Hi everyone, I need to get all available info on 600 URLs from "Alexa Web Information Service", I downloaded the java tool and I'm able to run a single query each time with a single switch/Response Group. I would like to ask how to write a batch file that would automate the process? The java tool… >>> More
Amazon AWS EC2 + Puppet, get Puppet to know AWS instance tags

as seen on Server Fault - Search for 'Server Fault'
I am having a problem with my AWS deployment, fairly new to AWS and Puppet. So coming to my question - can you distinguish puppet nodes with AWS machine tags or CNAME domains? A little background about the plan: have multiple clusters of machines, one php cluster, one legacy php cluster, one… >>> More