Re: [gentoo-user] sudo echo cannot write to /etc/ files ?

[gentoo@depardo.ch]

Le Mercredi, 6 Juillet 2005 15.52, Holly Bostick a ecrit :
> Hey, ho--
>
> Here's (one of) today's non-critical problems that's getting on my
> nerves, so hopefully somebody can help.
>
> I've finally got around to setting up sudo. It works fine, except for
> one thing.
>
> I don't just give myself blanket permissions to sudo to all commands; I
> made a Cmd_Alias group which includes a lot of utility apps. And, like
> many of you, I included emerge in this group.
>
> But a lot of the time, when I do an emerge -av, I find that there's a
> USE flag I want or don't want for the package, or I want an unstable
> version, or whatever, which means I have to echo to one of the files in
> /etc/portage.
>
> Echo is in the sudo-ed group, and echo isn't the problem-- the problem
> is that permission is refused to write to the file itself (which is an
> error *from* echo, so it would seem that echo itself is OK as far as
> sudo goes). Which means that I have to su anyway, to echo to the file,
> which really isn't the point of the exercise.
>
> As I see it, this error can mean only one of two things:
>
> sudo does not give me a login shell (so my UID is 'really' still my UID
> and not root's, and I don't have permission to write to the file); or
>
> there is another, "invisible" cli utility responsible for actually
> writing to the file, which is not sudo-ed.
>
> Or could it be something else?
>
> In any case, does anybody know how I could fix this? It's really
> screwing up my useability, which was just starting to shape up nicely :-) .
>
> Thanks,
> Holly

I think the problem come from the fact that echo is sudo-ed but the shell 
redirection isn't.

Compare this:
su -c "echo foo > /etc/portage/whatever"
and 
su -c "echo foo" > /etc/portage/whatever

The first one will succeed, but not the second.

To solve your problem, I would just do:
chgrp -R portage /etc/portage
chmod -R g+w /etc/portage

-- 
mat
-- 
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