sudo: command not found

On a Debian server, when running a command with sudo, I got the error

sudo: command not found

To fix this, you need to install “sudo” package. If you are logged in as non-root user, then you need to become root, for this, you can use the command

su -

Enter the root password when it prompt for the password.

Once logged in as user root, you can install sudo with the command

apt install sudo

To add a user to sudo group, run the command

usermod -aG sudo USER_NAME

Or

adduser USER_NAME sudo

adding user to sudo group

If you don’t have a user, you can create a user with the command

useradd -m --shell /bin/bash USER_NAME

To verify if the user has sudo rights, you can use the command “sudo -v”. You can also use “id” or “groups” command, which lists all groups the current user is in, you can verify if the user is part of sudo group.

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