Il 13/12/10 10.23, Bret Lambert ha scritto:
quoted text
> On Mon, Dec 13, 2010 at 10:14 AM, MERIGHI Marcus<mcmer-openbsd@tor.at>
> wrote:
>> hans@stare.cz (Jan Stary), 2010.12.13 (Mon) 09:15 (CET):
>>> On Dec 13 12:01:58, OpenBSD Geek wrote:
>>>> I have 100 users in groups : clients, and ftp_group
>>>> How can i remove these 100 users from ftp_group ?
>>>> I have already try usermod, but it only add users to group, not remove.
>>>> Is there a way to achieve my task ?
>>> Sadly, no. These users will be members of these groups forever.
>>> There's nothing you can do about it. You can only reinstall.
>> And do not forget to wipe your hard disk to make sure you have a clean
>> re-install!
>>
>> Jan, you just brightened my monday morning, thanks!
>>
>> On the more serious side and for the OP: how about the unix way of
>> combining simple tools to accomplish more complex tasks:
>> 1) use id(1) to get the groups
>> 2a) use sed(1) to get rid of the unwanted ones
>> 2b) use tr(1) to get a newline seperated list and grep(1) to get rid of
>>     the unwanted groups.
>> 3) use tr(1) again to transform the new list to a format suitable for
>>    usermod(8).
>> 4) feed ``usermod -G'' the new list.
>>
>> OR just ``vi /etc/groups''.
>>
>>
> You're all wrong. We obviously need XML user databases.
>
XML? Are you talking about the best system to create database on file 
not human readable? :) But talking about user databases, would not be 
better JSON or BSON ? geez!
Anyway to answer the question, /there's more than one way to/ accomplish 
this task. And..it's the key to solve the problem.