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!


Type in terminal

pkexec visudo

Change last line

#includedir /etc/sudoers


#includedir /etc/sudoers.d

It should work.!

  • Thanks, but Its already "#includedir /etc/sudoers.d" @Harshil – Prabal Rastogi May 10 '16 at 11:14

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.

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