After you have already installed 1.8 1. download ruby 1.9 2. install ruby 1.9 $ autoconf $ ./configure --prefix=/home/foo/myruby1.9 $ make $ make install 3. $ PATH=/home/foo/myruby1.9/bin:$PATH $ ruby -v ruby 1.9.0 (2007-12-26 revision 0) [i686-darwin8.11.1]

How to use ruby 1.9 and ruby 1.8 on the same machine

After you have already installed 1.8 1. download ruby 1.9 2. install ruby 1.9 $ autoconf $ ./configure --prefix=/home/foo/myruby1.9 $ make $ make install 3. $ PATH=/home/foo/myruby1.9/bin:$PATH $ ruby -v ruby 1.9.0 (2007-12-26 revision 0) [i686-darwin8.11.1] 07.12.13

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