Question

10

Sudo doesn't work

rated 0 times [ 10] [ 0] / answers: 1 / hits: 108834 / 3 Years ago, wed, june 9, 2021, 10:58:42

I edited my sudoers file in /etc and after that I can't use sudo anymore. I get this whenever I issue the command:

sudo: >>> /etc/sudoers: syntax error near line 30 <<<

sudo: parse error in /etc/sudoers near line 30

sudo: no valid sudoers sources found, quitting

sudo: unable to initialize policy plugin

How to solve it?

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gliroopy

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answered 3 Years ago fertion · Accepted Answer

Boot into recovery mode from the GRUB menu (hold the SHIFT key during boot to reveal this menu), enter the root shell.

First you need write permission to edit sudoers, so run
```
mount -o remount,rw /
```

Then use visudo and revert your mistake. visudo will check if the resulting sudoers file conforms to the required syntax.

By default visudo uses vi as editor, but you can tell it to use your favourite text editor with the EDITOR environment variable, e. g.:
```
EDITOR=nano visudo
```