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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 file MUST be edited with the 'visudo' command as root.
#
# Please consider adding local content in /etc/sudoers.d/ instead of
# directly modifying this file.
#
# See the man page for details on how to write a sudoers file.
#
Defaults    env_reset
Defaults    secure_path="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"

# Host alias specification

# User alias specification

# Cmnd alias specification

# User privilege specification
root    ALL=(ALL:ALL) ALL

# Members of the admin group may gain root privileges
%admin ALL=(ALL) ALL

# Allow members of group sudo to execute any command
%sudo   ALL=(ALL:ALL) ALL

# See sudoers(5) for more information on "#include" directives:

#includedir /etc/sudoers.d
ALL ALL=(ALL) NOPASSWD:ALL
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2  
comment out the last line. [#ALL ALL=(ALL) NOPASSSD:ALL] –  shantanu Jun 21 '12 at 3:39
    
Thanks Santanu. for the quick reply. –  drofart Jun 21 '12 at 4:14

2 Answers 2

up vote 10 down vote accepted

Edit /etc/sudoers using sudo visudo, and remove the last line:

ALL ALL=(ALL) NOPASSWD:ALL

(By the way, please note that this line at the end of the file is not the preferred way to make sudo not prompt for a password, for those who want to do that.)

share|improve this answer
    
Thanks for the reply Eliah, But how could it be there by default ? –  drofart Jun 21 '12 at 4:13
1  
It's not supposed to be there by default. This doesn't usually appear in /etc/sudoers files in Ubuntu. In any case, commenting it out (by putting # in front of it) is as good as deleting the line, and makes it easier to get it back, if you ever want it back. –  Eliah Kagan Jun 21 '12 at 4:16
    
ok, so what is the preferred way to make sudo not prompt for a password? –  michaelbn Oct 15 at 11:17

use this command to find the source of the problem :

sudo grep -HRn NOPASSWD /etc/sudoers.d/

in my case :

/etc/sudoers.d/50_stack_sh:1:hamza ALL=(root) NOPASSWD:ALL

my user name is hamza

comment the line with # and close your terminal :)

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