table of contents
GROUPADD(8) | System Management Commands | GROUPADD(8) |
NOM¶
groupadd - Créer un nouveau groupe
SYNOPSIS¶
groupadd [OPTIONS] NEWGROUP
DESCRIPTION¶
The groupadd command creates a new group account using the values specified on the command line plus the default values from the system. The new group will be entered into the system files as needed.
Groupnames may contain only lower and upper case letters, digits, underscores, or dashes. They can end with a dollar sign. Dashes are not allowed at the beginning of the groupname. Fully numeric groupnames and groupnames . or .. are also disallowed.
On Debian, the only constraints are that groupnames must neither start with a dash ('-') nor plus ('+') nor tilde ('~') nor contain a colon (':'), a comma (','), or a whitespace (space:' ', end of line: '\n', tabulation: '\t', etc.).
Groupnames may only be up to 32 characters long.
OPTIONS¶
The options which apply to the groupadd command are:
-f, --force
-g, --gid GID
See also the -r option and the GID_MAX description.
-h, --help
-K, --key KEY=VALUE
Example: -K GID_MIN=100 -K GID_MAX=499
Note: -K GID_MIN=10,GID_MAX=499 doesn't work yet.
-o, --non-unique
-p, --password PASSWORD
Without this option, the group account will be locked and with no password defined, i.e. a single exclamation mark in the respective field of ths system account file /etc/group or /etc/gshadow.
Note: This option is not recommended because the password (or encrypted password) will be visible by users listing the processes.
Il est nécessaire de vérifier si le mot de passe respecte la politique de mots de passe du système.
-r, --system
The numeric identifiers of new system groups are chosen in the SYS_GID_MIN-SYS_GID_MAX range, defined in login.defs, instead of GID_MIN-GID_MAX.
-R, --root CHROOT_DIR
-P, --prefix PREFIX_DIR
-U, --users
The default behavior (if the -g, -N, and -U options are not specified) is defined by the USERGROUPS_ENAB variable in /etc/login.defs.
CONFIGURATION¶
The following configuration variables in /etc/login.defs change the behavior of this tool:
FICHIERS¶
/etc/group
/etc/gshadow
/etc/login.defs
AVERTISSEMENTS¶
Vous ne pouvez pas ajouter d'utilisateur à un groupe NIS ou LDAP. Cela doit être effectué sur le serveur correspondant.
If the groupname already exists in an external group database such as NIS or LDAP, groupadd will deny the group creation request.
VALEURS DE RETOUR¶
The groupadd command exits with the following values:
0
2
3
4
9
10
VOIR AUSSI¶
chfn(1), chsh(1), passwd(1), gpasswd(8), groupdel(8), groupmod(8), login.defs(5), useradd(8), userdel(8), usermod(8).
05/08/2024 | shadow-utils 4.16.0 |