diff b/w making an rpm with a spec file and doing it manually

["Tahir Saleh" <tahirsaleh hotmail com>]

what is the difference b/w making an rpm with a specfile (specification 
file) and doing it manually.The reason i asked the question is this that i 
have been trying to generate the rpms through the spec file and not doing it 
manually as i didnt knew that it could be done manually after reading the 
how to articles i am thinking that i ve been stupid trying to generate rpm 
through spec file is that really so?

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