Helo I have already installed manbase - 4.0.0.0.15

Now I m installing newver version of the same rpm using

rpm -iv -replacefiles manbase -4.0.0.0.16

But using this option my important config files is overwrite.

now I want that using

first check whethere config file is there or not.
if file is not there then allow then to install
if file is there then dont allow it to overwrite

so rpm provide particular option to handle this.

Regards,
Amit