fml 8 tutorial
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# Unixgroup Map

Abstraction of /etc/group. IO is read only.

For example, the access to

    wheel:*:0:root,rudo,kenken

in /etc/group is "unixgroup:wheel" map in IO::Adapter.

    $obj = new IO::Adapter "unixgroup:wheel";

If you call get_next_key() method for this object, you will get the member of wheel group sequentially. In other words the wheel group is regarded as the following file by IO::Adapter.

    root
    rudo
    kenken

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