Find out a package which a file belongs to

Find out a package which a file belongs to
If some files are deleted or corrupted from Linux system, such as /bin/bash, /bin/mount then how can I find these file belongs to what RPM?

Just use the command "rpm -qf /bin/bash" , this will report the name of the package (bash-3.2-9.fc7 in my system) which contaions the file.