A most common source of confusion is that people add themselves to a new group but then do not log out and back in again and then have problems because the group is not assigned be sure to verify group membership. Groups are only assigned to users at login time. To add an existing user with id= foo to group= sudo:Īlternatively, you can first get root (e.g., sudo su -) and then run the same commands without prefix= sudo:Īfter being added to a new group the user must log out and then log back in again for the new group to take effect. Similarly, the more complex and variable output from command= id should look something like If sudo is not present in the output, the user does not belong to that group. E.g., a user with id= foo should see output from Once logged in as a user, you can verify whether or not the user belongs to group= sudo using either the id or groups commands.
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