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So you're talking about the command "rpm", rather than the package format "rpm" (packages which are (un)installed using the command "rpm"). Rpm works at a lower level than yum, interfacing with the packages directly. There's rarely, if ever, a need to do that yourself.
If you want to use the package manager, then use the package manager (yum in the case of RHEL/CentOS). You can interface with the packages directly using rpm, forcing (un)installs, etc., but don't expect the package manager to be aware of or work properly with any changes you make outside of it. Once you venture into that territory, it can be hard to come back.
Even when you want to install a one-off rpm package that isn't available in the repositories, you're still you're better off having yum install the rpm for you to handle conflicts and dependency resolution.
Last edited by suicidaleggroll; 03-08-2016 at 04:03 PM.
so you are better off relying on yum most of the time to install,upgrade,remove packages etc etc...was just wondering if there was any advantage to using rpm commands in this case...sorry i didnt make myself clearer