install rpm on centos 7 code example

Example: install rpm fedora

sudo rpm –i sample_file.rpm
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To install or upgrade a package, use the -U command-line option:
rpm -U filename.rpm. For example, to install the mlocate RPM used as an example in this chapter, run the following command:
rpm -U mlocate-0.22.2-2.i686.rpm. ...
rpm -Uhv mlocate-0.22.2-2.i686.rpm. ...
rpm –e package_name. ...
rpm –qa. ...
rpm –qa | more.