Création d'un utilisateur avec plusieurs options de commande

Vous pouvez le faire avec useradd . J'ai ajouté la ligne pour prouver que c'est possible. En général, courir passwd alors que le faire manuellement est plus sûr et constitue la meilleure solution.

sudo useradd -U -m -G <group> -p <password> <user-name>

De man useradd :

   -G, --groups GROUP1[,GROUP2,...[,GROUPN]]]
       A list of supplementary groups which the user is also a member of.
       Each group is separated from the next by a comma, with no
       intervening whitespace. The groups are subject to the same
       restrictions as the group given with the -g option. The default is
       for the user to belong only to the initial group.

   -m, --create-home
       Create the user's home directory if it does not exist. The files
       and directories contained in the skeleton directory (which can be
       defined with the -k option) will be copied to the home directory.

       By default, if this option is not specified and CREATE_HOME is not
       enabled, no home directories are created.

   -U, --user-group
       Create a group with the same name as the user, and add the user to
       this group.

       The default behavior (if the -g, -N, and -U options are not
       specified) is defined by the USERGROUPS_ENAB variable in
       /etc/login.defs.

   -p, --password PASSWORD
       The encrypted password, as returned by crypt(3). The default is to
       disable the password.

       Note: This option is not recommended because the password (or
       encrypted password) will be visible by users listing the processes.

       You should make sure the password respects the system's password
       policy.

Il est donc préférable de le faire en deux étapes, de cette façon le mot de passe ne sera pas enregistré par le système.

sudo useradd -U -m -G <group> <user-name>
sudo passwd <user-name>

Et vous pouvez obtenir même cela en une seule ligne d'action :

sudo useradd -U -m -G <group> <user-name> && sudo passwd <user-name>