Hacking RPMs with rpmrebuild
Rpmrebuild is able to reconstruct an RPM by looking up the information about it on the RPM database that is part of every RPM-based distribution like Fedora.
But rpmrebuild doesn’t stop there; you can also modify actual RPM packages without needing access to its SRPMS or even knowing much about SPEC files. Although this may not be recommended when dealing with core/base Linux system RPMS, it is incredibly useful for developers, release engineers, and system administrators who needs to create internal RPMs for their organizations.
At Red Hat Magazine.
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