CC Chen wrote in post #1039383:
> My lab workstation is redhat3 and the ruby version is 1.6.8.
>
> How do I update ruby version to 1.9.x?

Google 'ruby rvm'.

Note that RHEL3 went end-of-life over a year ago. You will be getting no 
security patches. Your machine will become increasingly likely to be 
p0wned.

http://rhn.redhat.com/errata/RHSA-2010-0386.html

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