RedHat package optimaisation

I've got RH7.2 installed on a machine and I'm wanting to reduce the number of packages that are installed on it. Esentially remove the packages that aren't needed for a basic server.

My problem is that
1) I'm not sure what all of the packages do.
2) I'm not sure which are esential for the server to work.

Does anyone know of any sites that list the rpm packages with a description of what each package does and will give me an idea as to what's essential and what's not.

(The alternative is to use a custom kickstart file thats optimised for hosting servers. Anyone know of any good kickstart files?)

 

 

 

 

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