On Wed, Apr 22, 2009 at 6:35 PM, Joel VanderWerf
<vjoel / path.berkeley.edu> wrote:
> Robert Dober wrote:
>>
>> On Wed, Apr 22, 2009 at 10:43 PM, David Masover <ninja / slaphack.com>
>> wrote:
>>>
>>> On Tuesday 21 April 2009 09:48:47 Robert Dober wrote:
>>>>
>>>> On Tue, Apr 21, 2009 at 4:39 PM, James Herdman <james.herdman / gmail.com>
>>>> Installing Ruby1.8 and Ruby1.9 on the same machine is a major pain.
>>>
>>> It really wasn't, for me. The easiest way is to simply give the
>>> executables a
>>> suffix -- irb1.9 vs irb. And I don't know that typing "irb1.9" is harder
>>> than
>>> "jruby --1.9".
>>
>>
>> At first I thought it was a brilliant idea, so I did it but gem1.9
>> install bombed because it did not find gem, I do not think that I did
>> anything stupid.
>
> I've gone the '--program-suffix=19' route, just to play with ruby19, and not
> had a problem, but I've avoided using gem19.
>
> What happens if I do
>
> gem19 install rake
>
> for example? Well, it overwrites my old rake, and the new rake has a
> hashbang line that invokes ruby19. Kaboom.
>

http://muness.blogspot.com/2009/02/easily-switch-between-ruby-186-and-191.html

The shell script at the url above seems to be working well for me.

Best,
Michael Guterl