About what IPv6 is and how it works here will not break down. A lot of this can be found on Wikipedia . Nowadays, IPv6 is not yet sufficiently advanced. Therefore tunnels over IPv4. This article provides instructions how to operationalize IPv6 over IPv4 in Linux.

continuation of the article "IPv6 in 5 minutes"

Sometimes it happens that you need to bulk edit rights to files or directories. For this, use two commands chmod (for changing rights) and chown (change owner for). As you know, the rights may be read-R (read), W for write (write) and X to start (eXecute). The file or directory can grant access to users by setting the owner (user) for the whole group (group), or for all (others). A lot of it is described on Wikipedia or the manual for chmod (man chmod) and to chown (man chown)

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There is the case for some time, which emerged a new online resource generator for Ubuntu distribution.
The advantage is that it is growing very rapidly. Where users can add new source and it also added a nice pile. Why do you add a new source? Just in case you want to facilitate installation and update programs that are outdated official sources, or are not there at all.

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Nowadays is very rampant PC virtualization. On one hardware allows us to run multiple virtual machines. Thanks to the saving in funds for the purchase of new hardware and electricity. This solution is particularly suitable for servers. However, virtualization is also available for desktops. There are several different ways to virtualize PC. All are described in Wikipedia ( http://en.wikipedia.org/wiki/Virtualization ).

Paravirtualization is a virtualization technique that presents a software interface to virtual PC is similar, but not identical, to the hardware on which it runs. I know of a few programs that allow it (VirtualBox, VMware, QEMU, XEN ...) but personally I only used VirtualBox and VMware.

continuation of the article "Virtualization via VirtualBox"

Today I resolved a significant change on my servers. I grouped the drives to RAID, fail safe. It is just as easy to create a software RAID during installation than at run time. However, in the latter case are more likely loss of the island data during this process. Unfortunately, I did not have a choice, and since the server I have at hand, I had to do nadiaľku. I used information from this site and I can say that now the server is back online. Thanks RAID1 system is now immune to damage or failure of one drive. Who wants to learn more about RAID arrays, let you read the article on Wikipedia: http://sk.wikipedia.org/wiki/RAID