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

[Holly Bostick <motub@planet.nl>]

A. Khattri schreef:
> On Wed, 6 Jul 2005, Holly Bostick wrote:
> 
> 
>>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.
> 
> 
> What is in /etc/sudoers?
> 
> Either the problem is there or maybe its because in some shells, echo is a
> built-in command and in others its not (so /bin/echo comes into play).
> 
> 

Well, I'm not going to copy my entire file, but I've got /usr/bin/echo
sudoed (because that's what 'which echo' said was the path to echo).

But doing a locate echo reveals that there is also a /bin/echo.... oh,
and la /usr/bin/echo reveals it to be a symlink to /bin/echo. Fine. What
 in the bloody blue blazes does that tell me? Changing visudo to allow
/bin/echo rather than /usr/bin/echo didn't do a thing.

I'm using bash, like a boring person. Looking (searching, actually)
through man bash, I can see that echo is a built-in-- do I have to sudo
bash as well? And in any case, echo isn't refusing to run-- if I run

secho $JAVA_HOME, I get a return... but it's the return of the *user's*
JAVA_HOME, rather than the *system* JAVA_HOME.

This supports my theory that this is a regular su shell and not an su -
shell, which is not much help to me in this situation (for echo to write
to the /etc/files, I need UID 0).

So I suppose I could find this in man sudoers, but that's almost as bad
as man bash for trying to find something when you're not quite sure what
you're looking for.

Is there a way to get sudo to behave as a login shell when sudo-ing
rather than just a regular su? And is that a scalable or global change
(limitable would be nice)?

Holly
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