NEWUSERS(8) System Management Commands NEWUSERS(8) NOM newusers - Mettre a jour, ou creer de nouveaux utilisateurs par lots SYNOPSIS newusers [options] [file] DESCRIPTION The newusers command reads a file (or the standard input by default) and uses this information to update a set of existing users or to create new users. Each line is in the same format as the standard password file (see passwd(5)) with the exceptions explained below: pw_name:pw_passwd:pw_uid:pw_gid:pw_gecos:pw_dir:pw_shell pw_name C'est le nom de l'utilisateur. It can be the name of a new user or the name of an existing user (or a user created before by newusers). In case of an existing user, the user's information will be changed, otherwise a new user will be created. pw_passwd Ce champ sera chiffre et utilise comme nouvelle valeur du mot de passe chiffre. pw_uid Ce champ est utilise pour definir l'UID de l'utilisateur. If the field is empty, a new (unused) UID will be defined automatically by newusers. Si ce champ contient un nombre, ce nombre sera utilise comme UID. If this field contains the name of an existing user (or the name of a user created before by newusers), the UID of the specified user will be used. Si l'UID d'un utilisateur existant est modifie, vous devrez configurer vous-meme le proprietaire des fichiers de l'utilisateur. pw_gid Ce champ est utilise pour definir l'identifiant du groupe primaire de l'utilisateur. If this field contains the name of an existing group (or a group created before by newusers), the GID of this group will be used as the primary group ID for the user. Si ce champ est un nombre, ce nombre sera utilise comme identifiant de groupe primaire de cet utilisateur. Si aucun groupe n'existe avec ce GID, un nouveau groupe sera cree avec ce GID et le nom de l'utilisateur. If this field is empty, a new group will be created with the name of the user and a GID will be automatically defined by newusers to be used as the primary group ID for the user and as the GID for the new group. If this field contains the name of a group which does not exist (and was not created before by newusers), a new group will be created with the specified name and a GID will be automatically defined by newusers to be used as the primary group ID for the user and GID for the new group. pw_gecos Ce champ est copie dans le champ GECOS de l'utilisateur. pw_dir Ce champ est utilise pour definir le repertoire personnel de l'utilisateur. If this field does not specify an existing directory, the specified directory is created, with ownership set to the user being created or updated and its primary group. Note that newusers does not create parent directories of the new user's home directory. The newusers command will fail to create the home directory if the parent directories do not exist, and will send a message to stderr informing the user of the failure. The newusers command will not halt or return a failure to the calling shell if it fails to create the home directory, it will continue to process the batch of new users specified. If the home directory of an existing user is changed, newusers does not move or copy the content of the old directory to the new location. This should be done manually. pw_shell Ce champ definit l'interpreteur de commande de l'utilisateur. Aucune verification n'est effectuee sur ce champ. newusers first tries to create or change all the specified users, and then write these changes to the user or group databases. If an error occurs (except in the final writes to the databases), no changes are committed to the databases. Lors du premier passage, les utilisateurs sont crees avec un mot de passe verrouille (les mots de passe ne sont pas modifies pour les utilisateurs non crees). Un second passage est utilise pour mettre a jour les mots de passe en utilisant PAM. Les echecs de mise a jour des mots de passe sont signales, mais n'empechent pas les mises a jour des autres mots de passe. Cette commande a ete concue pour les gros systemes pour lesquels un grand nombre de comptes sont mis a jour en meme temps. OPTIONS The options which apply to the newusers command are: --badname Allow names that do not conform to standards. -h, --help Afficher un message d'aide et quitter. -r, --system Creer un compte systeme. System users will be created with no aging information in /etc/shadow, and their numeric identifiers are chosen in the SYS_UID_MIN-SYS_UID_MAX range, defined in login.defs, instead of UID_MIN-UID_MAX (and their GID counterparts for the creation of groups). -R, --root CHROOT_DIR Apply changes in the CHROOT_DIR directory and use the configuration files from the CHROOT_DIR directory. Only absolute paths are supported. AVERTISSEMENTS Le fichier d'entree doit etre correctement protege puisqu'il contient des mots de passe en clair. CONFIGURATION The following configuration variables in /etc/login.defs change the behavior of this tool: GID_MAX (number), GID_MIN (number) Range of group IDs used for the creation of regular groups by useradd, groupadd, or newusers. The default value for GID_MIN (resp. GID_MAX) is 1000 (resp. 60000). HOME_MODE (number) The mode for new home directories. If not specified, the UMASK is used to create the mode. useradd and newusers use this to set the mode of the home directory they create. MAX_MEMBERS_PER_GROUP (number) Maximum members per group entry. When the maximum is reached, a new group entry (line) is started in /etc/group (with the same name, same password, and same GID). The default value is 0, meaning that there are no limits in the number of members in a group. This feature (split group) permits to limit the length of lines in the group file. This is useful to make sure that lines for NIS groups are not larger than 1024 characters. If you need to enforce such limit, you can use 25. Note: split groups may not be supported by all tools (even in the Shadow toolsuite). You should not use this variable unless you really need it. PASS_MAX_DAYS (number) The maximum number of days a password may be used. If the password is older than this, a password change will be forced. If not specified, -1 will be assumed (which disables the restriction). PASS_MIN_DAYS (number) The minimum number of days allowed between password changes. Any password changes attempted sooner than this will be rejected. If not specified, 0 will be assumed (which disables the restriction). PASS_WARN_AGE (number) The number of days warning given before a password expires. A zero means warning is given only upon the day of expiration, a value of -1 means no warning is given. If not specified, no warning will be provided. SUB_GID_MIN (number), SUB_GID_MAX (number), SUB_GID_COUNT (number) If /etc/subuid exists, the commands useradd and newusers (unless the user already have subordinate group IDs) allocate SUB_GID_COUNT unused group IDs from the range SUB_GID_MIN to SUB_GID_MAX for each new user. The default values for SUB_GID_MIN, SUB_GID_MAX, SUB_GID_COUNT are respectively 100000, 600100000 and 65536. SUB_UID_MIN (number), SUB_UID_MAX (number), SUB_UID_COUNT (number) If /etc/subuid exists, the commands useradd and newusers (unless the user already have subordinate user IDs) allocate SUB_UID_COUNT unused user IDs from the range SUB_UID_MIN to SUB_UID_MAX for each new user. The default values for SUB_UID_MIN, SUB_UID_MAX, SUB_UID_COUNT are respectively 100000, 600100000 and 65536. SYS_GID_MAX (number), SYS_GID_MIN (number) Range of group IDs used for the creation of system groups by useradd, groupadd, or newusers. The default value for SYS_GID_MIN (resp. SYS_GID_MAX) is 101 (resp. GID_MIN-1). SYS_UID_MAX (number), SYS_UID_MIN (number) Range of user IDs used for the creation of system users by useradd or newusers. The default value for SYS_UID_MIN (resp. SYS_UID_MAX) is 101 (resp. UID_MIN-1). UID_MAX (number), UID_MIN (number) Range of user IDs used for the creation of regular users by useradd or newusers. The default value for UID_MIN (resp. UID_MAX) is 1000 (resp. 60000). UMASK (number) The file mode creation mask is initialized to this value. If not specified, the mask will be initialized to 022. useradd and newusers use this mask to set the mode of the home directory they create if HOME_MODE is not set. It is also used by pam_umask as the default umask value. FICHIERS /etc/passwd Informations sur les comptes des utilisateurs. /etc/shadow Informations securisees sur les comptes utilisateurs. /etc/group Informations sur les groupes. /etc/gshadow Informations securisees sur les groupes. /etc/login.defs Configuration de la suite des mots de passe caches << shadow password >>. /etc/pam.d/newusers PAM configuration for newusers. /etc/subgid IDs des groupes subalternes d'un utilisateur. /etc/subuid IDs de utilisateurs subalternes d'un utilisateur. VOIR AUSSI login.defs(5), passwd(1), subgid(5), subuid(5), useradd(8). shadow-utils 4.17.4 20/03/2025 NEWUSERS(8)