01-27-2009
Different operating systems / derivatives have different software package management systems.
rpm is the Red Hat Package manager which is widely spread. It's also used additionally on other Linux'es, AIX, etc.
pkg is afaik the SUN software package management tool.
For debian there are different. alien for installing RPMs, dpkg is down below all of them and on top are some like apt, aptitude and synaptic for example.
So there is not usually the question "which is better", since 1st there is the question, which OS do I use and so which is package manager is available.
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RPMKEYS(8) System Manager's Manual RPMKEYS(8)
NAME
rpmkeys - RPM Keyring
SYNOPSIS
rpmkeys {--import|--checksig}
DESCRIPTION
The general forms of rpm digital signature commands are
rpmkeys --import PUBKEY ...
rpmkeys {-K|--checksig} PACKAGE_FILE ...
The --checksig option checks all the digests and signatures contained in PACKAGE_FILE to ensure the integrity and origin of the package.
Note that signatures are now verified whenever a package is read, and --checksig is useful to verify all of the digests and signatures
associated with a package.
Digital signatures cannot be verified without a public key. An ASCII armored public key can be added to the rpm database using --import.
An imported public key is carried in a header, and key ring management is performed exactly like package management. For example, all cur-
rently imported public keys can be displayed by:
rpm -qa gpg-pubkey*
Details about a specific public key, when imported, can be displayed by querying. Here's information about the Red Hat GPG/DSA key:
rpm -qi gpg-pubkey-db42a60e
Finally, public keys can be erased after importing just like packages. Here's how to remove the Red Hat GPG/DSA key
rpm -e gpg-pubkey-db42a60e
SEE ALSO
popt(3),
rpm(8),
rpmdb(8),
rpmsign(8),
rpm2cpio(8),
rpmbuild(8),
rpmspec(8),
rpmkeys --help - as rpm supports customizing the options via popt aliases it's impossible to guarantee that what's described in the manual
matches what's available.
http://www.rpm.org/ <URL:http://www.rpm.org/>
AUTHORS
Marc Ewing <marc@redhat.com>
Jeff Johnson <jbj@redhat.com>
Erik Troan <ewt@redhat.com>
Panu Matilainen <pmatilai@redhat.com>
Red Hat, Inc 29 October 2010 RPMKEYS(8)