From: Rick DeNatale <rick.denatale@...>
Date: 2009-04-05T22:53:39+09:00
Subject: Re: How to get "irb1.8" using Ruby1.8 instead of Ruby1.9.1 ?

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On Sun, Apr 5, 2009 at 8:29 AM, I=F1aki Baz Castillo <ibc@aliax.net> wrote:

> El Domingo 05 Abril 2009, Ken Bloom escribi=F3:
> > 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 o=
f
> the
> installed irb (Ruby 1.9.1).


The Debian packaging system relies on users not installing stuff in the sam=
e
places that the packager does. /usr/bin is one of those places.

When you are installing source on a Debian based system (which would includ=
e
Ubuntu) you need to put it somewhere else., like /usr/local/bin, so instead
of just
./configure
make
sudo make install

you need to do something like

./configure --prefix=3D/usr/local/ruby1.9
make
sudo make install

I think you need to somehow force the system to reinstall the ruby 1.8
package(s), then install 1.9 from source to a safe place.

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