From: 7stud -- <bbxx789_05ss@...>
Date: 2009-04-30T14:04:47+09:00
Subject: Re: RubyGems question: install vs. update

Gregory Brown wrote:
> The difference between gem update gemname and gem install gemname is
> that gem update is essentially a no-op if you already have the latest
> gem installed, where gem install will download and install the gem
> even if you already have it.
> 

In addition, if you issue the update command with no filename, for 
example:

$ gem update

rubygems will search your local gem directory and update all the gems 
contained therein with the latest versions.

If you don't need the old versions, then after either updating or 
installing you can use the command

$ gem cleanup

to get rid of the old versions.





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