Provided by:
passwd_4.1.4.1-1ubuntu2_i386 
NAMN
groupmod - ändra en gruppdefinition på systemet
SYNOPSIS
groupmod [flaggor] GRUPP
BESKRIVNING
The groupmod command modifies the definition of the specified GROUP by
modifying the appropriate entry in the group database.
FLAGGOR
Flaggorna som gäller för kommandot groupmod är:
-g, --gidGID
The group ID of the given GROUP will be changed to GID.
The value of GID must be a non-negative decimal integer. This value
must be unique, unless the -o option is used. Values between 0 and
999 are typically reserved for system groups.
Any files that have the old group ID and must continue to belong to
GROUP, must have their group ID changed manually.
-h, --help
Visa hjälpmeddelande och avsluta.
-n, --new-nameNY_GRUPP
The name of the group will be changed from GROUP to NEW_GROUP name.
-o, --non-unique
When used with the -g option, allow to change the group GID to a
non-unique value.
-p, --passwordLÖSENORD
Det krypterade lösenordet, som returneras av crypt(3).
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.
CONFIGURATION
The following configuration variables in /etc/login.defs change the
behavior of this tool:
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.
FILER
/etc/group
Gruppkontoinformation.
/etc/gshadow
Säker gruppkontoinformation.
AVSLUTNINGSVÄRDEN
The groupmod command exits with the following values:
0
success
2
invalid command syntax
3
invalid argument to option
4
specified group doesn´t exist
6
specified group doesn´t exist
9
group name already in use
10
can´t update group file
SE OCKSÃ…
chfn(1), chsh(1), passwd(1), gpasswd(8), groupadd(8), groupdel(8),
useradd(8), userdel(8), usermod(8).