Permission problems after install of F16 comming from F14.

[Ed Greshko]

On 06/07/2012 08:20 PM, Erik P. Olsen wrote:
> On 07/06/12 01:27, Ed Greshko wrote:
>> On 06/07/2012 05:26 AM, Erik P. Olsen wrote:
>>> I have a number of F14 partitions which must be mounted unchanged on the new F16
>>> system. It turns out that I get unexpected permission problems with this approach.
>>> I use the same user name on both systems but on F14 I got userID 500 whereas on F16
>>> it became 1000. I wasn't aware of that but learned it the hard way. When I chowned
>>> the permissions to 1000:1000 it worked on F16 but now not on F14.
>>>
>>> What is the proper way to fix this problem? I am tempted to reinstall F16 and force
>>> my userID to 500, but the system warns me not to create userIDs<  1000. It is not
>>> feasible to clone the partitions due to space constrains so I am not able to have
>>> identical partitions with different permissions.
>>>
>>
>> The "proper" way to fix this is to do it on the F14 system.
>>
>> Change your password entry to have uid:gid of 1000:1000.  Make the change to the
>> group file to change it to 1000 as well.
>>
>> Then, go to all the top of all partitions/directories owned by 500 and chown -R
>> 1000:1000.  In other words, make all the changes on the F14 side.
>>
>> I had to go through this process when I installed F16 since my RHELv4 system had me
>> as 500:500 and I NFS mount my directories from there.  Just took 5 or so minutes.
>>
>> Reinstalls are never needed to change a user's gid/uid.
>>
> I thought of this at the very beginning but I never found out how to change userID
> from 500 to 1000. Please explain how to do that.
>

OK....  Let's say that your user name on the F14 system is olsen.....

The entry in /etc/passwd is probably

olsen:x:500:500:Erik olsen:/home/olsen:/bin/bash

and /etc/group is probably

olsen:x:500:

Just change those to...

olsen:x:1000:1000:Erik olsen:/home/olsen:/bin/bash
and
olsen:x:1000:

And then....

chown -R 1000:1000 /home/olsen

along with any other directories or file systems that were previously owned by uid
500 gid 500.

That's all...



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