Add user to sudoers again

[Robert Heller]

You can also boot into single user mode and get the same level of 
functionallity.  

At Wed, 12 Apr 2017 18:27:04 +0200 "Ubuntu user technical support,  not for general discussions" <ubuntu-users at lists.ubuntu.com> wrote:

> 
> Hi,
> 
> if you lose superuser permissions for what ever reason, maybe because
> you just forgot the password, simply use a live media, than get
> root access to the installed Linux via chroot or systemd-nspawn and
> change the password, add a user to what groups ever etc.,
> https://help.ubuntu.com/community/LiveCdRecovery#Lost_Password .
> 
> Regards,
> Ralf
> 
> 

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