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I removed the password from my account using the "User Accounts" window and then on running sudo, it prompted me for a password, even when i didn't have one. I tried pressing enter without entering anything but it didn't help.

Also I couldn't unlock my account to set a new password in the "User Accounts" window in "System Settings" because it kept prompting for a password and wouldn't except an empty string, just like sudo. I then finally set a new password using passwd.

Is this a bug which shouldn't be happening? How do I prevent this from happening?

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Did you try to logout and then login again? – Nikos Gr Mar 31 '14 at 16:04
@NikosGr resetting the password using passwd solved the problem. – udiboy1209 Mar 31 '14 at 16:55

1 Answer 1

If you must remove the need for a password to use sudo, you can edit the /etc/sudoers file using sudo visudo command.

# 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

and add NOPASSWD:ALL for sudoers group as shown above

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does this also stop the keyring prompts at the start? – udiboy1209 Mar 31 '14 at 16:50
for key ring see the different answers to this question depending on your version of ubuntu… – Stormvirux Apr 1 '14 at 0:35

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