[Solved] just had to log out and back in Original post: I’m running Debian 12 and I set a separate root password from my username password.

When trying to install a .deb file I noticed that it said I was not in sudoers file so I looked it up and tried the command SU and successfully entered my root password.

The I tried doing

sudo usermod -aG sudo [username]

And then I verify the addition of the user to the sudo group with

groups [username]

And this does indeed show that I am in the sudo group however when I try to install a .deb file after that or even sudo apt update its still telling me I am not in sudoers list.

Any ideas what I’m doing wrong here?

  • @Vector
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    2230 days ago

    You may need to log out and log back in for the addition of the sudo group to take effect.

    The default config sudo should be fine, but if the above doesn’t work then you may also want to look up “visudo” to check/modify the sudo config.