How do I install or upgrade an RPM package?
In order to install an RPM package you must first have the RPM you are trying to install on your system. Many people will download RPMs from a website and of course, Red Hat Network (RHN) provides all the RPM packages included in the distributions. There are two main flags that are used to install or upgrade RPM packages:
-i is used to install a new package. Always use this for kernel installations and upgrades.
-U is used to upgrade an RPM package but will also install a package if it does not exist in the RPM database.
Usage and additional options can be found in the RPM man page. Type man rpm from the command line.
Here is some information about the -i and -U flags:
INSTALL AND UPGRADE OPTIONS
rpm {-i|–install} [install-options] PACKAGE_FILE …
This installs a new package.
The general form of an rpm upgrade command is
rpm {-U|–upgrade} [install-options] PACKAGE_FILE …
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