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How to run a specific program as root without a password prompt?

I installed fedora 15. I use sudo visudo to modify sudoers file and add the following line:


I then logout and login. I try doing any sudo command like sudo gvim &... but I am still getting prompted for password.

How do you get NOPASSWD sudo option to work in Fedora 15?

  • Is my syntax wrong?
  • Is there some Fedora 15 thing that is preventing this to work?


After seeing answers below talking about "the order of your sudoers file" I decided to copy the full sudoers file in here. I took the liberty of removing most white space lines, all comments lines, and all lines containing the string "Default":

root    ALL=(ALL)   ALL
USERNAME    ALL=NOPASSWD:ALL,/bin/mount,/bin/umount

%wheel  ALL=(ALL)   ALL
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marked as duplicate by Gilles, Michael Mrozek Sep 22 '11 at 3:10

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

I am a little frustrated... because this is supposed to be soo simple. –  Trevor Boyd Smith Sep 15 '11 at 17:21
Could this be of help? linuxforums.org/forum/miscellaneous/… (look at the end for the solution) –  nico Sep 15 '11 at 17:34
wow nico. i went there. and you are correct. the problem was in the ordering of the statements in the sudoers file! If you had posted a full answer I would have given you the upvote/accepted answer. –  Trevor Boyd Smith Sep 15 '11 at 17:42
I did not know if that was actually the issue and I never used NOPASSWD before... so I just posted it as a comment. At the end, what's important is that you solved the problem :) –  nico Sep 15 '11 at 19:03

1 Answer 1

up vote 6 down vote accepted

Often this is caused by the order of statements in /etc/sudoers, make sure that you have any permissions that may override it before you declare NOPASSWD, or it may be overridden by a later command.

Bear in mind that you should not be using sudo with gvim anyway -- graphical programs should be run with gksu, kdesu, or an alternative, otherwise you risk problems (particularly notable are problems with ~/.ICEauthority and other often-essential files).

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FYI, if you read my post it says " I use sudo visudo to modify sudoers file". –  Trevor Boyd Smith Sep 15 '11 at 17:45
Chris and @nico, both of you are correct. The problem was in the ordering of the sudoers file. –  Trevor Boyd Smith Sep 15 '11 at 17:46
I don't understand, what relevance does using visudo have in the context of my answer? –  Chris Down Sep 15 '11 at 17:47
oh my bad. I had selective hearing... when I read your answer I thought it said 'you should not be editing the sudoers file with gvim'. When in reality you are saying "if you need to call a graphical program like gvim you can't use 'sudo'". –  Trevor Boyd Smith Sep 15 '11 at 17:51
ALL=(ALL) means the user may run as any user/group using sudo. My preferred way of doing it in your situation would be to do something like USER ALL = NOPASSWD: ALL, although I wouldn't recommend allowing a user to run anything elevated through sudo without a password (it seems like a significant security issue). –  Chris Down Sep 15 '11 at 18:20

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