I'm trying to use sudo command in Debian 9. For example sudo apt install zsh will ask the root password but does not accept it. I do indeed know the root password (I'm the only user of this machine) and I have added my 'meouser' to the sudo group.
root:~# cat /etc/group | grep sudo
sudo:x:27:meouser
I have edited /etc/sudoers with visudo and it has lines (should I show more of it?)
root:~# cat /etc/sudoers | grep -w sudo
# Allow members of group sudo to execute any command
%sudo ALL=(ALL:ALL) ALL
But this is what happens:
meouser:~$ sudo apt install zsh
We trust you have (...etc removed the usual warning...)
[sudo] password for meouser:
Sorry, try again.
[sudo] password for meouser:
Sorry, try again.
[sudo] password for meouser:
sudo: 3 incorrect password attempts
I have tried this several times, the problem is no way mistyping the password gazillion times. What I'm doing wrong? Advice appreciated. I have of course searched SOF but have not found this situation; in particular I have no problem with accessing the /etc/sudoers file itself.
Ok this was embarrassingly easy one... thanks @user3469811 for the tip, here it is: https://unix.stackexchange.com/a/170894
As it turns out, I was stubbornly inputting the root password, not meouser's. (My mind was stuck on following the su - procedure.) On hindsight, it does request "password for meouser". Ah well once again I'm saved by the community.