"adduser" not adding users to default group "users"
 

i'm running slackware-current
after creating a user with "adduser" the program says it will add the user
to the default group "users"
after that a "cat /etc/group" tells me no user is present under the
"users" group

useradd -s /bin/bash andy -g users -G video,audio

The -g switch allows you to specify the group the user should belong to, -G should be a comma separated list of the other groups you want the user to belong to. Read man useradd

i solved it
group doesn't hold the user's group
the passwd holds the group-user relation