NOTE: This is an update from my previous post on sharing the desktop or running a VNC Server. This method works great in Fedora 18.

First install the vino package:

yum install vino

Then click on Activities in the top left corner of the screen.

Next type in "vino" and click on "Desktop Sharing" under Applications or under Settings.

Next click "Allow other users to view your desktop". Make sure "Allow other users to control my desktop" is also check.

First download dispcalGUI. It's a GUI to the command line program Argyll. It can be downloaded here: http://dispcalgui.hoech.net/#download For Fedora get the correct RPM version. Then install with yum (replace filename with your version):

In Fedora 18 the Adwaita GTK+ theme has dropdowns messed up in some programs. The text on the drop downs is light grey on white and it's hard to read.

To fix this install the Gnome Tweak tool and a different GTK+ theme:

yum install greybird-gtk2-theme greybird-gtk3-theme gnome-tweak-tool

Then open Tweak Tool. Under "Gtk+ Theme" select "Greybird".

Simply install the following package and RAW file previews start showing up. You don't even need to logout.

yum install raw-thumbnailer

In older versions of Fedora (14 or less) you could save your current iptables with the following command:

service iptables save

This would take the tables you currently have in places and save them to the following file:

/etc/sysconfig/iptables

So you could added/delete/change any tables you want then save them so they would be correctly re-applied on the next boot.

From Linux do the following to see if the current machine can support a 64-bit kernel or not:

grep flags /proc/cpuinfo | grep lm

If you see a flag called "lm" then it can support a 64-Bit Linux install.

You basically need to change settings as the "gdm" user to change setting at the GDM login.

Do the following first:

su -
xhost +

Then you can use sudo to run programs as the gdm user. To change the background do the following:

sudo -u gdm gnome-control-center

Then click Background. There you can go select a background.

If you have gnome-tweak-tool installed another change I like to do is to show the date along with the clock at the top of the screen you can do this with the following:

First download the Sun/Oracle JRE from their web site in RPM format. The JRE in Fedora does not work. You have to get the one from Sun.

Install it:

yum install ./jre-7u55-linux-x64.rpm

Create a directory for it:

mkdir -p /opt/minecraft/client/

Download the software from here:

cd /opt/minecraft/client/
wget https://s3.amazonaws.com/MinecraftDownload/launcher/minecraft.jar

Download the icon:

Here are two ways to get a changelog history of a given Fedora package. The results of both commands are usually similar but not always.
First install the package needed.

yum install yum-utils

The below example will show the changelog of the darktable package.

repoquery --changelog darktable

rpm -q --changelog darktable

The method below can be used to convert any accent characters to "?" in a text file. This method can be used to strip accent characters from a subtitle file. The purpose for this is some muxing programs such as dvdauthor will error out when finding these characters.

The method below just converts them to "?". But you can write the results out to a different file then diff against the original to figure out where the characters are then manually convert them if you like.