http://www-jpc.physics.ox.ac.uk/getjpc.html

Cross Platform

Programs are generally compiled for a specific computer architecture and, once compiled, will only run on that machine (or another like it). Pure Java can be compiled once and run on any platform that has a Java Virtual Machine (JVM). JPC is pure Java, and thus runs on Windows, Linux, MacOS, mobile phones, set-top boxes, ARM boards and anything else with a JVM — all without the need to build different versions for each platform.

Secure

http://wiki.enigmacurry.com/OpenSSH

OpenSSH

OpenSSH is a free implementation of Secure Shell. It is probably the most useful utility I know of. I have helped a great many people with SSH so I thought I would write down some of the more important topics as an easy reference for those people. Read the rest of this entry »

yum install dkms dkms-fuse

http://www.tummy.com/journals/entries/jafo_20050809_165341

The –force option to “rpm” is actually a short-hand for the options –replacepkgs, –replacefiles, and –oldpackage:

• –replacepkgs will install the package even if the system already has this package installed on the system. This leads to duplicate copies of packages being installed, which is almost never what you want to have happen. The exception to this is the kernel, where you may want multiple versions installed so you can back off to an old version if a new one breaks something. Note that kernel packages are built such that they do not require –replacepkgs.
• –replacefiles will overwrite files from other packages, ignoring conflicts between the packages. This is the primary reason that package installation fails, and simply using this option results in upgrades to the conflicting package breaking the package you are now trying to install. Never a good idea, but sometimes useful if you’re lazy and willing to put up with the breakage.
• –oldpackage allows an upgrade to upgrade to an older version of a package. In other words, it provides a retrograde. Usually, RPM will not upgrade any packages which you already have the same or a newer version installed.

http://linux.derkeiler.com/Mailing-Lists/Fedora/2005-07/2676.html 

> I’ve newly installed FC3 onto my Dell 600m Inspiron laptop, and I’m
> trying to use Yum to upgrade the kernel and kernel-utils. As it’s the
> first time for this laptop, Yum responds with “You need to to download
> the keys for…packages…and install them. You can do this with rpm
> –import public.gpg.key”
>
> However, when I run rpm –import public.gpg.key, I get the message
> “error: public.gpg.key: import read failed.”
>
> What am I doing wrong?

Use the following…
rpm –import /usr/share/rhn/RPM-GPG-KEY-fedora
and
rpm –import /usr/share/rhn/RPM-GPG-KEY
That should fix your problem.