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I got the following error while using the sudo apt-get update command.

:~$sudo apt-get update
/etc/sudoers.d/90-cloudimg-ubuntu: syntax error near line 1 <<<
sudo: parse error in /etc/sudoers.d/90-cloudimg-ubuntu near line 1
sudo: no valid sudoers sources found, quitting
sudo: unable to initialize policy plugin

See here for the secreenshot

I tried finding a solution, but I want a specific and precised answer. I am new to Ubuntu (14.04), please help me!

Mostafa Ahangarha
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Prabal Rastogi
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  • maybe duplicated here http://askubuntu.com/questions/73864/how-to-modify-a-invalid-etc-sudoers-file-it-throws-out-an-error-and-not-allowi – Mohamed Slama May 19 '16 at 11:14

2 Answers2

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Type in terminal

pkexec visudo

Change last line 

#includedir /etc/sudoers

To

#includedir /etc/sudoers.d

It should work.!

Harshil Jethava
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Hold Shift immediately while booting it will open GRUB screen.Now select option recovery mode. Choose to open root terminal. Run mount -n -o remount,rw / and then visudo.

Harshil Jethava
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