RPM packages typically have file names like foo-1.0-1.i386.rpm. The file name includes the package name (foo), version (1.0), release (1), and architecture (i386). To install a package, log in as root and type the following command at a shell prompt:

rpm -Uvh foo-1.0-1.i386.rpm

If the installation is successful, the following output is displayed:

 Preparing... ########################################### [100%] 1:foo ########################################### [100%]

As you can see, RPM prints out the name of the package and then prints a succession of hash marks as a progress meter while the package is installed.

The signature of a package is checked automatically when installing or upgrading a package. The signature confirms that the package was signed by an authorized party. For example, if the verification of the signature fails, an error message such as the following is displayed:

error: V3 DSA signature: BAD, key ID 0352860f

If it is a new, header-only, signature, an error message such as the following is displayed:

error: Header V3 DSA signature: BAD, key ID 0352860f

If you do not have the appropriate key installed to verify the signature, the message contains the word NOKEY such as:

warning: V3 DSA signature: NOKEY, key ID 0352860f

Refer to Section 10.3, “Checking a Package's Signature” for more information on checking a package's signature.