centos - How does yum determine what package is newer with multiple repositories enabled? -

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i trying understand how yum able determine particular package newer when system has multiple repositories enabled , particular package may available in 1 or of repos.

we trying create custom package management system in order manage our local repos , report if there new updates available on servers vs available on local repos.

yum looks "newest" version and release given package name. checks version first, , release. if give multiple repositories have same package name, yum use "newest" version (and release).

a comment @msuchy mentions rpmdev-vercmp may find useful analysis of rpm files.

further reading:


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