How to fix Grub2 bootloader flaw.

According to researchers Ismael Ripoll and Hector Marco,who wrote this article:

A vulnerability in Grub2 has been found. Versions from 1.98 (December, 2009) to 2.02 (December, 2015) are affected. The vulnerability can be exploited under certain circumstances, allowing local attackers to bypass any kind of authentication (plain or hashed passwords). And so, the attacker may take control of the computer.

Just hit the backspace key 28 times at the Grub username prompt during power-up.
This will open a Grub rescue shell with the rescue shell allows unauthenticated access to a computer and the ability to load another environment.
The Grub versions 1.98 to 2.02 are affected and suffer integer overflow problem.
The basic of the fault lies within two functions; the grub_password_get() function and the and grub_password_get() script.
To fix it use this patch.

5 Sci-fi Body Hacks That Actually Exist .

Ghostscript tutorial ...

Today I wrote a simple tutorial about Ghostscript under Windows 10.
Most parts of this tutorial can be used also with Linux - example only.
Also the part of stack working on Linux like Windows.
I will come also with one tutorial about Ghostscript and Linux only.
The tutorial can be found here.

News: Nvidia VR with SDK.

November 18, 2015: NVIDIA released the GameWorks VR and DesignWorks VR Software Development Kits.
The 1.0 SDK releases also add support for Windows 10.
The main reason is a complex challenge VR versus graphics processing to traditional 3D apps and games.

You can read more about this here and can also see this video:

Fedora 23 - error with win qemu and virtualbox.

First I try to use WinQemu from here : qemu-w64-setup-20151115.exe 2015-11-15 11:15 22M QEMU Installer for Windows (64 bit).
I use this commands for qemu:
C:\qemu>qemu-img create -f qcow2 fedora23_disk.img 8G 
C:\qemu>qemu-system-x86_64w.exe -hda fedora23_disk.img -cdrom Fedora-Live-Workstation-x86_64-23-10.iso -boot d
The output error come with this image:
 
I try also with VirtualBox - using same size 8Gb of disk image but seam come with errors.
 I use Intel CPU 2117U @ 1.80Ghz / 4Gb Ram and Nvidia Geforce GT 740M video card, but seam this not help me.
Why Fedora team ? Why ?

MultCloud - free provide 10TB.

MultCloud(https://www.multcloud.com/), a FREE and easy-to-use web app, supports for Managing Files and Transferring Files across Cloud Drives. Free provide 10TB traffic for data transmission.

News: Google Play Store increasing file size .

To help developers build apps , Google Play Store increasing file size limit from 50 MB to 100 MB.
Seam Google wants to encourage developers to create richer apps and games.
Also, users will see a warning only when the app exceeds the 100MB quota and makes use of Expansion Files.
You can read more at support googleplay apk

GIF file animated with open-source software.

I tested the Blender 3D version 2.76 with Inkscape and Synfig to make this GIF animated.
This is the result :

I used the default cube from Blender 3D to make a SVG image. 

Also I working with Synfig software to create this GIF. 

I will make one good tutorial about this GIF. 

I hope this will help you to find new ways to deal with the open-source software.

Google Shutting Down Google+ Photos !

Google announced in a post on its social network site, it will begin winding down Google+ Photos: on August 1st we’ll start to shut down Google+ Photos -- initially on Android, and soon thereafter on the Web and iOS. How to fix that ... ? So you need to download the new Google Photos today for uninterrupted access to all your photos, videos and albums. To do that use android.apps.photos. With the new app you’ll still be able to backup, edit, and share your photos and videos, with unlimited storage, automatic organization, and more. The biggest difference is that :

• Google+ users had to actually visit the network on the web to access photos;
• Google Photos has its own dedicated web interface.

Also your photos and video will still remain available for download through Google Takeout - a program that allows users to download a copy of their data stored within Google products.

The VirtualBox and Fedora 22.

I used the VirtualBox - version 4.3.28.xxxx and Fedora Linux 22.
The main reason was to test how fast it's the  Fedora 22 over VirtualBox.
And the answer was just a few minutes.
My hardware come with NVIDIA video card Geforce 740M, CPU: 2117U -1.80Ghz and 4Gb RAM.
I used Fedora-Workstation-netinst-x86_64-22.iso.
This will take some time when you install because this will use the network to download all packages.
You need to set one new  Linux os over Virtual Box and make this setting:
Load the Fedora .iso and start it with Show/Play button.

After that, if all packages are on your computer then the next step comes with unloading the .iso file and select the virtual drive.
This can be seen under Controler: SATA. Let all settings under Network: NAT.
Start it with Show button and you will see working well.


I like very much the new Virtual Box and Fedora also, because it's fast (~ 1 min) and I don't need to start another hardware to test my linux stuff.

News: The Tangram is designed for real-time rendering of 2D and 3D maps.

Mapzen builds open-source mapping tools and collaborates on open geodata initiatives and one good choice is Tangram.
The Tangram is a flexible mapping engine, designed for real-time rendering of 2D and 3D maps.
Come with some features like matrix maps:

Fix Bash shell vulnerability under Linux OS .

If some Bash code outside of the curly brace then it will then be executed by the linux system.

env x='() { :;}; echo vulnerable' bash -c " bash test "

If your system is vulnerable, it will then output:

vulnerable
bash test 

How Do You Fix It ? Just open up a terminal, and type:

sudo apt-get update
sudo apt-get upgrade

or under Fedora with :

sudo yum update

Also you can see more about linux and linux tutorials here.

News: Scribus 1.5.0 released.

The new version 1.5.0 for test purposes is now based on Qt 5.2. Some features come with this version:

• Scribus can now store bitmap images within its native file format;
• offers a "Symbol" or clone feature similar to Adobe Illustrator;
• the new "Weld" feature, objects are combined and moved without being grouped;
• each object remains fully editable;
• most often requested text features: vertical scaling of text, orphans and widows control, foot and endnotes, text variables, cross references;
• with a huge number of new or rewritten import filters - and some are still experimental;
• also: vector drawings, 3D, bitmap files, ...

Read more about this new version: 1.5.0 release webpage.