Where can I get the list of Repository for Yum in Ubuntu?

I have a vanilla mac开发者_JAVA百科hine (Ubuntu) and I just did apt-get install yum

However, the yum.cof has empty repos list. So, where can I get the most updated list of repository?

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As mentioned here::

• Ubuntu natively uses deb packages, not rpm. yum is for the redhat rpm variant.
• yum is the package management tool on RHEL-derived distributions and Fedora, Ubuntu uses apt instead.

So using apt (see apt-get HowTo) remains the recommended package management.