From: Ken Bloom <kbloom@...>
Date: 2009-04-06T02:09:20+09:00
Subject: Re: How to get "irb1.8" using Ruby1.8 instead of Ruby1.9.1 ?

On Sun, 05 Apr 2009 07:29:36 -0500, I単aki Baz Castillo wrote:

> El Domingo 05 Abril 2009, Ken Bloom escribi坦:
>> Please tell me what the shebang in irb1.8 is, by running
>>
>> head /usr/bin/irb1.8
>>
>> (On my system, it says #!/usr/bin/ruby1.8, so this whole situation
>> you're in should be impossible.)
> 
> Thanks. As I've explained in this thread, I had Ruby1.8 installed as DEB
> package (so irb was a link to irb1.8). When compiling and installing
> Ruby1.9.1 from sources, it created /usr/bin/ruby and /usr/bin/irb.
> But it's strange since /usr/bin/irb was a softlink and after Ruby 1.9.1
> install it remains being a softlink to irb1.8, but irb1.8 is now a copy
> of the installed irb (Ruby 1.9.1).

So you're saying that when you installed irb from source, it overwrote 
the TARGET of the /usr/bin/irb link rather than the /usr/bin/irb link 
itself. That's really wierd. The solution would be to
"apt-get install --reinstall irb1.8", but note that you'll probably lose 
irb 1.9 by doing that. (See other posts for information about better ways 
to arrange how things are set up on your system.)

--Ken


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