Re: /etc/group

[Alexey Salmin <alexey.salmin@gmail.com>]

On Tue, Mar 2, 2010 at 5:20 PM, Ansgar Burchardt <ansgar@43-1.org> wrote:
> Hi,
>
> Alexey Salmin <alexey.salmin@gmail.com> writes:
>
>> Hello! /etc/group in default debain installation contains dozens of
>> groups and I'm wondering: how to determine their purpose? Which
>> package did some specific group came from? What purpose does it serve?
>
> Users and groups that are not created on package installation are
> documented in the base-passwd package.  For example, for the ssh group
> you mention it contains the following information:
>
>  ssh: ssh-agent is setgid to ssh in order to prevent ptrace attacks.
>
> Regards,
> Ansgar
>
>
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>

Thanks a lot! Didn't know that.
Just wondering: why there are so many users and groups which are not
created on package installation?

Alexey