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Lost my root access and unable to install any software or any other priviliged operations

rated 0 times [ 1] [ 0] / answers: 1 / hits: 4165 / 3 Years ago, wed, october 27, 2021, 9:57:42

I have been using Precise Pangolin and I am into a problem now :( I was trying to add my current user to the group vboxusers.. So I used the command,

sudo usermod -G vboxusers myusername

And it got succeded too. But after adding like that, I am unable to perform any sudo operations. Whenever i use a sudo command I get an error message stating "myusername is not in sudoers file".

I tried enabling root account also. But I couldn't. How to fix this issue?

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Location: French Polynesia

Member since Sun, Dec 20, 2020

3 Years ago

answered 3 Years ago igeonlothe · Accepted Answer

As enzotib comments, a good way is to restart in recovery mode and write

for i in adm cdrom sudo video plugdev lpadmin; do adduser myusername $i; done

Substituting myusername as required. This will add you to all the important groups, including sudo, which gives you access to sudo.