file is the local source of group information.
It can be used in conjunction with the Hesiod domain
`group', and the NIS maps `group.byname' and `group.bygid',
as controlled by
consists of newline separated
records, one per group, containing four colon
These fields are as follows:
Name of the group.
The group's decimal ID.
Lines whose first non-whitespace character is a pound-sign (#)
are comments, and are ignored.
Blank lines that consist
only of spaces, tabs or newlines are also ignored.
field is the group name used for granting file access to users
who are members of the group.
field is the number associated with the group name.
They should both be unique across the system (and often
across a group of systems) since they control file access.
is an optional
This field is rarely used
and an asterisk is normally placed in it rather than leaving it blank.
field contains the names of users granted the privileges of
The member names are separated by commas without spaces or newlines.
A user is automatically in a group if that group was specified
entry and does not need to be added to that group in the