From: Ken Bloom <kbloom@...>
Date: 2008-02-12T00:10:12+09:00
Subject: Re: Problems with Rubygems

On Sun, 10 Feb 2008 20:34:10 -0500, Ali Panick wrote:

> hemant wrote:
>> Hi,
>>
>> I am facing some issues with Rubygems on my ubuntu gutsy machine, where
>> Ruby 1.8.6 p111 is compiled and installed with:
>>
>> ./configure --prefix=/usr/local
>>
>> ruby executable is not symlinked and I have /usr/local/bin in path.
>>
>> Recently I started to notice that, gem executables while installing
>> gems aren't getting created anywhere in path. I thought, it could be a
>> rubygems version issue and I ran:
>>
>> sudo gem update --system
>>
>> which seems to have updated to rubygems version 1.0.1, and yet when i
>> run:
>>
>> gem --version
>> 0.9.5
>>
>> So definitely something fishy going on here!
>>
> this is a simple and maybe stupid reply. I encountered the same problem
> yesterday installing rubygems on my vps.
> 
> I logged out and problem was fixed.

If logging out fixed it, the problem probably wasn't fixed. What probably 
happened was that when you updated with gem update --system, it installed 
rubygems 1.0.1 into a different location. Since your shell (probably 
bash) had hashed the location of rubygems so it wouldn't have to go 
searching, it continued to use the old binary until you logged out and 
logged back in. Run
$ whereis gem
make sure you don't have extra copies of rubygems hanging around 
somewhere, and clean up the mess if you do.

--Ken

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