Upgrading a Ruby Version Using ‘rvm’

Another note to self (mostly): If you’re using rvm (and you should), to upgrade an existing Ruby version old to a new version new you can do this (on a command line):

rvm upgrade new old

At the time of this writing, that would be:

rvm upgrade 1.9.2-p180 1.9.2-p136

Thanks to Wayne Seguin for tweeting the hint.

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