yum provides command or its alias yum whatprovides is another way to search the package database. In this case, it searches for the package that provide some functionality or package file. Use a specific name or a file-glob wildcards syntax to list the available or installed packages that provides the functionality or desired file.
$ su -c "yum provides /etc/httpd/conf/httpd.conf" ... httpd-2.2.16-1.fc14.x86_64 : Apache HTTP Server Repo : fedora Matched from: Filename : /etc/httpd/conf/httpd.conf httpd-2.2.17-1.fc14.x86_64 : Apache HTTP Server Repo : updates Matched from: Filename : /etc/httpd/conf/httpd.conf httpd-2.2.17-1.fc14.x86_64 : Apache HTTP Server Repo : installed Matched from: Other : Provides-match: /etc/httpd/conf/httpd.conf