rubygems在ubuntu下的升级
在ubuntu下升级rubygems报以下错误（*ruby版本1.9.2
rubygems版本1.3.7
）
ERROR:While executing gem ... (RuntimeError) gem update --system is disabled on Debian, because it will overwrite the content of the rubygems Debian package, and might break your Debian system in subtle ways. The Debian-supported way to update rubygems is through apt-get, using Debian official repositories.If you really know what you are doing, you can still update rubygems by setting the REALLY_GEM_UPDATE_SYSTEM environment variable, but please remember that this is completely unsupported by Debian.
解决方案
Update to 1.8.11: sudo gem install rubygems-update -v 1.8.11sudo update_rubygemssudo gem update --system
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