groupadd(1M) System Administration Commands groupadd(1M)
groupadd - add (create) a new group definition on the system
/usr/sbin/groupadd [ -g gid [-o]] group
The groupadd command creates a new group definition on the system by
adding the appropriate entry to the /etc/group file.
The following options are supported:
-g gid
Assigns the group id gid for the new group. This group id must be
a non-negative decimal integer below MAXUID as defined in
/usr/include/sys/param.h. The group ID defaults to the next
available (unique) number above the highest number currently
assigned. For example, if groups 100, 105, and 200 are assigned
as groups, the next default group number will be 201. (Group IDs
from 0-99 are reserved by SunOS for future applications.)
-o Allows the gid to be duplicated (non-unique).
The following operands are supported:
group A string consisting of characters from the set of lower case
alphabetic characters and numeric characters. A warning message
will be written if the string exceeds MAXGLEN, which is usually
set at eight characters. The group field must contain at least
one character; it accepts lower case or numeric characters or a
combination of both, and must not contain a colon (:) or NEW-
LINE.
The following exit values are returned:
0 Successful completion.
2 Invalid command syntax. A usage message for the groupadd command
is displayed.
3 An invalid argument was provided to an option.
4 The gid is not unique (when -o option is not used).
9 The group is not unique.
10 The /etc/group file cannot be updated.
/etc/group
/usr/include/userdefs.h
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWcsu |
+-----------------------------+-----------------------------+
users(1B), groupdel(1M), groupmod(1M), grpck(1M), logins(1M), pwck(1M),
useradd(1M), userdel(1M), usermod(1M), group(4), attributes(5)
groupadd only adds a group definition to the local system. If a network
name service such as NIS or NIS+ is being used to supplement the local
/etc/group file with additional entries, groupadd cannot change infor-
mation supplied by the network name service. However, groupadd will
verify the uniqueness of group name and group ID against the external
name service.
SunOS 5.9 27 Mar 1998 groupadd(1M)