235 lines
6.2 KiB
Groff
235 lines
6.2 KiB
Groff
'\" t
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.\" Title: groupadd
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.\" Author: Julianne Frances Haugh
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.\" Generator: DocBook XSL Stylesheets vsnapshot <http://docbook.sf.net/>
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.\" Date: 19/03/2025
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.\" Manual: System Management Commands
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.\" Source: shadow-utils 4.17.4
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.\" Language: Italian
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.\"
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.TH "GROUPADD" "8" "19/03/2025" "shadow\-utils 4\&.17\&.4" "System Management Commands"
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.\" -----------------------------------------------------------------
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.\" * Define some portability stuff
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.\" -----------------------------------------------------------------
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.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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.\" http://bugs.debian.org/507673
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.\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html
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.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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.ie \n(.g .ds Aq \(aq
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.el .ds Aq '
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.\" -----------------------------------------------------------------
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.\" * set default formatting
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.\" -----------------------------------------------------------------
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.\" disable hyphenation
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.nh
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.\" disable justification (adjust text to left margin only)
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.ad l
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.\" -----------------------------------------------------------------
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.\" * MAIN CONTENT STARTS HERE *
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.\" -----------------------------------------------------------------
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.SH "NOME"
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groupadd \- crea un nuovo gruppo
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.SH "SINOSSI"
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.HP \w'\fBgroupadd\fR\ 'u
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\fBgroupadd\fR [\fIOPTIONS\fR] \fINEWGROUP\fR
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.SH "DESCRIZIONE"
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.PP
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The
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\fBgroupadd\fR
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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\&.
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.PP
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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\&.
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.PP
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Groupnames may only be up to 32 characters long\&.
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.SH "OPZIONI"
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.PP
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The options which apply to the
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\fBgroupadd\fR
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command are:
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.PP
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\fB\-f\fR, \fB\-\-force\fR
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.RS 4
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This option causes the command to simply exit with success status if the specified group already exists\&. When used with
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\fB\-g\fR, and the specified GID already exists, another (unique) GID is chosen (i\&.e\&.
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\fB\-g\fR
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is turned off)\&.
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.RE
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.PP
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\fB\-g\fR, \fB\-\-gid\fR\ \&\fIGID\fR
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.RS 4
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The numerical value of the group\*(Aqs ID\&.
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\fIGID\fR
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must be unique, unless the
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\fB\-o\fR
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option is used\&. The value must be non\-negative\&. The default is to use the smallest ID value greater than or equal to
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\fBGID_MIN\fR
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and greater than every other group\&.
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.sp
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See also the
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\fB\-r\fR
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option and the
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\fBGID_MAX\fR
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description\&.
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.RE
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.PP
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\fB\-h\fR, \fB\-\-help\fR
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.RS 4
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Mostra un messaggio di aiuto ed esce\&.
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.RE
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.PP
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\fB\-K\fR, \fB\-\-key\fR\ \&\fIKEY\fR=\fIVALUE\fR
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.RS 4
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Overrides
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/etc/login\&.defs
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defaults (GID_MIN, GID_MAX and others)\&. Multiple
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\fB\-K\fR
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options can be specified\&.
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.sp
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Example:
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\fB\-K\fR\ \&\fIGID_MIN\fR=\fI100\fR\ \&
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\fB\-K\fR\ \&\fIGID_MAX\fR=\fI499\fR
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.sp
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Note:
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\fB\-K\fR\ \&\fIGID_MIN\fR=\fI10\fR,\fIGID_MAX\fR=\fI499\fR
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doesn\*(Aqt work yet\&.
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.RE
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.PP
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\fB\-o\fR, \fB\-\-non\-unique\fR
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.RS 4
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permits the creation of a group with an already used numerical ID\&. As a result, for this
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\fIGID\fR, the mapping towards group
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\fINEWGROUP\fR
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may not be unique\&.
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.RE
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.PP
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\fB\-p\fR, \fB\-\-password\fR\ \&\fIPASSWORD\fR
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.RS 4
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defines an initial password for the group account\&. PASSWORD is expected to be encrypted, as returned by
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\fBcrypt \fR(3)\&.
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.sp
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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
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/etc/group
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or
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/etc/gshadow\&.
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.sp
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\fBNote:\fR
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This option is not recommended because the password (or encrypted password) will be visible by users listing the processes\&.
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.sp
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Ci si deve accertare che la password rispetti le norme delle password del sistema\&.
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.RE
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.PP
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\fB\-r\fR, \fB\-\-system\fR
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.RS 4
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Crea un gruppo di sistema\&.
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.sp
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The numeric identifiers of new system groups are chosen in the
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\fBSYS_GID_MIN\fR\-\fBSYS_GID_MAX\fR
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range, defined in
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login\&.defs, instead of
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\fBGID_MIN\fR\-\fBGID_MAX\fR\&.
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.RE
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.PP
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\fB\-R\fR, \fB\-\-root\fR\ \&\fICHROOT_DIR\fR
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.RS 4
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Apply changes in the
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\fICHROOT_DIR\fR
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directory and use the configuration files from the
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\fICHROOT_DIR\fR
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directory\&. Only absolute paths are supported\&.
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.RE
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.PP
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\fB\-P\fR, \fB\-\-prefix\fR\ \&\fIPREFIX_DIR\fR
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.RS 4
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Apply changes to configuration files under the root filesystem found under the directory
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\fIPREFIX_DIR\fR\&. This option does not chroot and is intended for preparing a cross\-compilation target\&. Some limitations: NIS and LDAP users/groups are not verified\&. PAM authentication is using the host files\&. No SELINUX support\&.
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.RE
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.PP
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\fB\-U\fR, \fB\-\-users\fR
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.RS 4
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A comma\-separated list of usernames to add as members of the group\&.
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.sp
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The default behavior (if the
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\fB\-g\fR,
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\fB\-N\fR, and
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\fB\-U\fR
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options are not specified) is defined by the
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\fBUSERGROUPS_ENAB\fR
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variable in
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/etc/login\&.defs\&.
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.RE
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.SH "CONFIGURAZIONE"
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.PP
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The following configuration variables in
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/etc/login\&.defs
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change the behavior of this tool:
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.SH "FILE"
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.PP
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/etc/group
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.RS 4
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Informazioni sugli account di gruppo\&.
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.RE
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.PP
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/etc/gshadow
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.RS 4
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Informazioni sicure sugli account di gruppo\&.
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.RE
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.PP
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/etc/login\&.defs
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.RS 4
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Configurazione del pacchetto password shadow
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.RE
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.SH "AVVISI/CAVEAT"
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.PP
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Non \(`e possibile aggiungere un gruppo NIS o LDAP\&. Questo deve essere fatto sul server corrispondente\&.
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.PP
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If the groupname already exists in an external group database such as NIS or LDAP,
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\fBgroupadd\fR
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will deny the group creation request\&.
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.SH "VALORI RESTITUITI"
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.PP
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The
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\fBgroupadd\fR
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command exits with the following values:
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.PP
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\fI0\fR
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.RS 4
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success
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.RE
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.PP
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\fI2\fR
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.RS 4
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invalid command syntax
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.RE
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.PP
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\fI3\fR
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.RS 4
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invalid argument to option
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.RE
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.PP
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\fI4\fR
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.RS 4
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GID is already used (when called without
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\fB\-o\fR)
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.RE
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.PP
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\fI9\fR
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.RS 4
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group name is already used
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.RE
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.PP
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\fI10\fR
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.RS 4
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can\*(Aqt update group file
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.RE
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.SH "VEDERE ANCHE"
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.PP
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\fBchfn\fR(1),
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\fBchsh\fR(1),
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\fBpasswd\fR(1),
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\fBgpasswd\fR(8),
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\fBgroupdel\fR(8),
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\fBgroupmod\fR(8),
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\fBlogin.defs\fR(5),
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\fBuseradd\fR(8),
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\fBuserdel\fR(8),
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\fBusermod\fR(8)\&.
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