From: Ken Bloom <kbloom@...>
Date: 2008-03-12T04:40:07+09:00
Subject: Re: About updating gems

On Tue, 11 Mar 2008 13:01:53 -0500, Tom Cloyd wrote:

> Ken Bloom wrote:
>> On Tue, 11 Mar 2008 09:21:50 -0500, Manuel Monta単辿s wrote:
>>
>>
>>> Hello everyone,
>>>
>>> I'm novice in linux, ruby and rails. I've reinstalled my ubuntu
>>> operative system, the ruby module, and also the rubygems module. After
>>> that I've updated rubygems by this command:
>>>
>>> sudo gem update --system
>>>
>>> Ruby gem was updated successfully, but now I can't use ruby gem, each
>>> time I write:
>>>
>>> sudo gem list -r
>>>
>>> or:
>>>
>>> sudo gem help commands
>>>
>>> or something else, I get the follow answer:
>>>
>>> /usr/bin/gem:23: uninitialized constant Gem::GemRunner (NameError)
>>>
>>> I don't know what it means, so, does someone know the meaning? and
>>> does someone know how I can fix it?
>>>
>>> Thank you very much.
>>>     
>>>     
>> You should ideally be unable to run gem update --system on Debian and
>> Ubuntu. This was discussed here on ruby talk, and also in a Debian bug
>> at http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=452547. I wouldn't
>> know whether this change has propagated to ubuntu yet, but you
>> shouldn't run "gem update --system" when the system package manager is
>> in charge of which rubygems version is installed on your system.
>>
>> To fix this, apt-get install --reinstall rubygems, and get rid of any
>> rubygems stuff you may find in /usr/local
>>
>> --Ken
>>
>>
> Ken, thanks. I've posted this problem twice to this list and gotten
> nothing, and this morning  you give me...well not me exactly...the
> answer. I assumed that when you said
> "
> 
> To fix this, apt-get install --reinstall rubygems, and get rid of any
> rubygems stuff you may find in /usr/local
> 
> "
> you got that backwards. In any case, I removed the rubygems stuff in
> /usr/local and THEN did the reinstall. Now for the first time in 4 days
> I have  working rubygems. Man...this needs to be written down somewhere.
> Like in my notes. So shall it be.

That order's fine too. I figure it could be done in either order.

--Ken

-- 
Ken (Chanoch) Bloom. PhD candidate. Linguistic Cognition Laboratory.
Department of Computer Science. Illinois Institute of Technology.
http://www.iit.edu/~kbloom1/