Savage Server and Selinux under Fedora 14

If you want to install fedora Savage Game Server 14, you will have problems with SELinux.
Use this commands to fix it.
$ chcon -t execmem_exec_t '/home/mythcat/SavageSer/silverback.bin'

Fun with F-Spot 0.8.0 and sqlite3

Today I focused on the F-Spot version 0.8.0.
I knew that contains a database that keeps information about the pictures.
I found the database and tried a few commands:

$ cd .config/
$ cd f-spot/
$ ls
addin-db-001  photos.db

Once I found the database, I started SQLite3. See the example below:

$ sqlite3  photos.db 
SQLite version 3.7.2
Enter ".help" for instructions
Enter SQL statements terminated with a ";"
sqlite> .tables
exports         meta            photo_versions  rolls         
jobs            photo_tags      photos          tags          
sqlite> .schema photos
CREATE TABLE photos (
 id   INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL, 
 time   INTEGER NOT NULL, 
 base_uri  STRING NOT NULL, 
 filename  STRING NOT NULL, 
 description  TEXT NOT NULL, 
 roll_id   INTEGER NOT NULL, 
 default_version_id INTEGER NOT NULL, 
 rating   INTEGER NULL 
);
CREATE INDEX idx_photos_roll_id ON photos(roll_id);
sqlite> select * from photos;
1|1279913277|file:///home/mythcat/Photos/2010/07/23|IMG_2970.JPG||1|1|0

It is easy to use and implemented various python scripts.

Linux and denial of service - DoS

A denial-of-service attack (DoS attack) or distributed denial-of-service attack (DDoS attack) is an attempt to make a computer resource unavailable to its intended users.
We can see more on the wiki web page.

On Linux we can see if an attack is attempted with this:

netstat -ant | grep SYN_RECV | wc -l
This is an indication of a denial of service (DoS) attack against your system's X port.

It is likely one attack against a public service such as a web server or mail server.

Notifications in Fedora 14

We use the following command

$ notify-send  "This is some text"

or

$zenity --info --text "This is some text"

This will display a text balloon "This is some text".
The problem appears when we want to display the output of a command.
For this, I used a python script. Here's the source code:

#!/usr/bin/env python
import os
import sys
import pynotify
pynotify.init("Output comand")
arg=sys.argv[1]
print arg
s = os.popen(arg).read()
n = pynotify.Notification("Output",s)
n.show()

If you wish to use a compound command, then you will need to use quotes.
For example, we use the command "ls-a 'as follows:

$python testpy.py "ls -a"

This is just a small example, you can create more complex applications.

How Install Firefox 4 on Fedora 14.

Firefox is one of the latest versions of the Mozilla .

It is currently available in two repositories - Remi and Spot.

See the next steps if you want install Firefox 4.

First , go on super user shell.

# wget http://repos.fedorapeople.org/repos/spot/firefox4/fedora-firefox4.repo -O /etc/yum.repos.d/fedora-firefox4.repo

Now, you can install Firefox 4

# yum --enablerepo fedora-firefox4 install firefox4

That is all.

Fedora 14 and Blender 3D

It is a great disappointment to me that Fedora 14 comes with Blender 3D version 2.49b-10.
I expected a pleasant surprise to see version 2.5.
Here is the result:

# yum search blender
Loaded plugins: langpacks, presto, refresh-packagekit
Adding en_US to language list
updates/pkgtags                                                   |  10 kB     00:00     
============= Matched: blender =====================
blenderplayer.i686 : Standalone blender player
LuxRender-blender.i686 : Blender export plugin to LuxRender
blender.i686 : 3D modeling, animation, rendering and post-production
spe.noarch : Python IDE with UML,PyChecker,Debugger,GUI design,Blender & more
libpano13-tools.i686 : Tools that use the libpano13 library
yofrankie-bge.noarch : 3D Game with characters from Big Buck Bunny movie

Of course, you can use version 2.5 from the official site.