This section contains an overview of principal modes using with RPM for installing, uninstalling, upgrading, querying, listing, and checking RPM packages on your Linux
system. You must be familiar with these RPM commands now because we'll use them often in the continuation of this book.
To install a RPM package, use the command:
[root@deep] /#rpm -ivh foo-1.0-2.i386.rpm
|
Take a note that
RPM packages have a file of names like
foo-1.0-2.i386.rpm, which include the package name (foo), version (1.0), release (2), and architecture (i386).
To uninstall a RPM package, use the command:
Notice that we used the package name
foo, not the name of the original package file
foo-1.0-2.i386.rpm.
To upgrade a RPM package, use the command:
[root@deep] /#rpm -Uvh foo-1.0-2.i386.rpm
|
With this command,
RPM automatically uninstall the old version of
foo package and install the new one. Always
use
rpm -Uvh to install packages, since it works fine even when there are no previous versions of the package installed.
To query a RPM package, use the command:
This command will print the package name, version, and release number of installed package
foo. Use this command to verify that a package is or is not installed on your system.
To display package information, use the command:
[root@deep] /#rpm -qi foo
|
This command display package information; includes name, version, and description of the installed program. Use this command to get information about the installed package.
To list files in package, use the command:
This command will list all files in a installed
RPM package. It works only when the package is already installed on your system.
To check a RPM signature package, use the command:
[root@deep] /#rpm --checksig foo
|
This command checks the
PGP signature of specified package to ensure its integrity and origin. Always use this command first before installing new
RPM package on your system. Also,
GnuPG or
Pgp software must be already installed on your system before you can use this command.
