table of contents
GROUPADD(8) | Systemhanteringskommandon | GROUPADD(8) |
NAMN¶
groupadd - skapa en ny gruppSYNOPSIS¶
groupadd [flaggor] grupp
BESKRIVNING¶
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.FLAGGOR¶
Flaggorna som gäller för kommandot groupadd är:-f, --force
-g, --gid GID
See also the -r option and the GID_MAX description.
-h, --help
-K, --key NYCKEL=VÄRDE
Example: -K GID_MIN=100 -K GID_MAX=499
Notera: -K GID_MIN=10,GID_MAX=499 fungerar ännu inte.
-o, --non-unique
-p, --password LÖSENORD
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.
-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
CONFIGURATION¶
The following configuration variables in /etc/login.defs change the behavior of this tool:GID_MAX (number), GID_MIN (number)
The default value for GID_MIN (resp. GID_MAX) is 1000 (resp. 60000).
MAX_MEMBERS_PER_GROUP (number)
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.
SYS_GID_MAX (number), SYS_GID_MIN (number)
The default value for SYS_GID_MIN (resp. SYS_GID_MAX) is 101 (resp. GID_MIN-1).
FILER¶
/etc/group/etc/gshadow
/etc/login.defs
TÄNK PŶ
It is usually recommended to only use groupnames that begin with a lower case letter or an underscore, followed by lower case letters, digits, underscores, or dashes. They can end with a dollar sign. In regular expression terms: [a-z_][a-z0-9_-]*[$]?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.
You may not add a NIS or LDAP group. This must be performed on the corresponding server.
If the groupname already exists in an external group database such as NIS or LDAP, groupadd will deny the group creation request.
AVSLUTNINGSVÄRDEN¶
Kommandot groupadd avslutas med följande värden:0
2
3
4
9
10
SE OCKSŶ
chfn(1), chsh(1), passwd(1), gpasswd(8), groupdel(8), groupmod(8), login.defs(5), useradd(8), userdel(8), usermod(8).17-05-2017 | shadow-utils 4.4 |