Announcing the release of Fedora 16 Beta!!

suvayu ali fatkasuvayu+linux at
Wed Oct 5 08:06:48 UTC 2011

Hello Michael, Ian and everyone else,

On Tue, Oct 4, 2011 at 5:28 PM, Michael Cronenworth <mike at> wrote:
> suvayu ali wrote:
>> I see that usermod can do this[1], but I'm not sure if there will be
>> conflicts with existing files after the change.
> If you are using plain authentication and not something like LDAP you
> can use usermod and edit groups with groupmod. You can manually edit
> /etc/passwd or /etc/group, but you will have to manually run "chown"
> across all files with the old UID/GID to update them to the new UID/GID.
> After you make the GID change you will have to change the ownership of
> your home to match the new GID:
> # chgrp -R group /home/user
> (per the groupmod[1] man page)
> Also, delete any /tmp files with your old UID and chown files outside of
> /home. (per the usermod[2] man page)
> # chown -R user:group /opt/foo/dir
> [1] Any files that have the old group ID and must continue to belong to
>     GROUP, must have their group ID changed manually.
> [2] The ownership of files outside of the user´s home directory must be
>     fixed manually.

The systems in question are my laptop and my desktop with me and a
test user, and a few removable storage devices. Thanks for all the
possible solutions, and the warnings. I think I'll skip it unless its
absolutely necessary for some reason.

Thanks a lot. :)


Open source is the future. It sets us free.

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