Moving the /Home Partition, Permission Issues.

[Loïc Grenié]

2010/4/29 Aart Koelewijn <aart at mtack.xs4all.nl>:
> On Wed, 28 Apr 2010 14:49:44 -0500, Tuxman wrote:
>
>> Aart Koelewijn wrote:
>>> On Wed, 28 Apr 2010 13:29:09 -0500, Tuxman wrote:
>>>
>>>
>>>> I'm getting ready to install 10.4 (8.04 currently), and I need to
>>>> rearrange some partitions in preparation.
>>>>
>>>> I need to move my /Home partition out of the way temporarily and the
>>>> only place I have to move it to is an NTFS drive that can't be
>>>> changed. I can handle all of the repartitioning with GParted without a
>>>> problem, but I'm weak when it comes to Linux file/folder permission
>>>> issues.
>>>>
>>>> Are there issues here? How do I do this safely? If you can point me to
>>>> a guide, that would be great. The more cookbookish the better.
>>>>
>>>> Thanks
>>>>
>>>>
>>> Make a *.tgz file of it. When you have your new /home partition you can
>>> move the *.tgz file there and extract it. That will keep the
>>> permissions as long as you make sure the users keep the same uid.
>>>
>>> Aart
>>>
>>>
>>>
>> User ID is something I hadn't thought about or seen any reference to.
>> Thanks for bringing it up.
>>
>> If this is a complete new install, is choosing the same user name
>> sufficient?
>
> It depends on the order in which you make your users
> root is always user 0
> the first user you make when you install (who will have sudo permissions)
> will be user 1000, the second 1001 and so on. Permissions of files are
> saved as the uid, not with names. So user 1000 on the new system will own
> the files user 1000 had on the old system. The name of user 1000 on the
> new system can differ from the name of user 1000 on the old system.

    tar now keeps user and group *names* (and number as a fallback), so
  numbering of users/groups should not be a problem as long as you keep
  the same names.

        Loïc