Mac OS X Tiger in a Nutshell

Creating a Group with niload

The niload utility can be used to read the flat file format used by /etc/group (name:password:gid:members). To add a new group, you can create a file that adheres to that format, and load it with niload. For ad hoc work, you can use a here document (an expression that functions as a quoted string, but spans multiple lines) rather than a separate file:

    $ sudo niload group . <<EOF
    > writers:*:1001:
    > EOF