Rar/Zip/7z Password Cracking under Linux

Hi all,

I believe that some of you have already had some problems with password protected archives, isn’t it true?

One possible solution to this problem is to break the pass by the brute force method.  Under linux we have the “Rarcrack” tool, which eases our job. Here I’ll give some steps in how to install Rarcrack under Ubuntu, but they are fully applicable to any other distro.

Installing Rarcrack under Ubuntu 10.04:

0 – Before Downloading Rarcrack you will need to download libxml2-dev package:
$ sudo apt-get install libxml2-dev

1 – Download RarCrack file:

$ wget http://surfnet.dl.sourceforge.net/sourceforge/rarcrack/rarcrack-0.2.tar.bz2

If this source is broken, you should google about “rarcrack-0.2.tar.bz2” and download it from anywhere.

2 – Extract the file:

$ tar xvjf rarcrack-0.2.tar.bz2

3 – Go into the new folder:

$ cd rarcrack-0.2/

4 – Just “Make”:

$ make

5 – Install Rarcrack:

$ sudo make install

6 – Now you can try to crack the file:

$ rarcrack myFile.ext [–threads numberOfThreads] [–type rar|zip|7z]

Hope it works for you! ;D

HP Laptops never again…

Hi, All…

This post is about the lack of care and support that some companies have with their consumers…

Since I bought a Hewlett-Packard laptop, about ten months ago, I started to have troubles with it. In the moment of the acquisition I thought a lot about what brand to choose, and decided to choose HP because of the confidence that the company SEEMED to have. Well… Bad choice.

What is going on with nowadays companies that they can’t simply include a DVD disc with hardware drivers on their products? Is that too much expensive? I think that the price we pay for a laptop, mainly here in Brazil, is enough to cover the costs of  these facilities for us, clients.

But, alright, we have the drivers available online. Cool, isn’t it? Yeah, it would be really cool if all the buyers had a great broadband in their home, which isn’t the reality.

Another issue, WHY the hell HP supports only Microsoft OS’s in some of their laptop models? Is it too hard to make a  strong Linux community as Dell does[1]? I can tell you, my friend, if I were to buy a laptop today, Dell would be the chosen without any doubt. And, yes, I know about the existence of [2], but it is completely useless.

But… let’s stop talking about driver issues here…

My laptop had a 6-month warranty here in Brazil… During the six  months nothing happened to it, but, past four days of the warranty time my power supply seemed to stop working. I thought “Well, it’s only power supply issue, easy to solve”. A friend of mine bought the same model as mine, and after some tests with its power supply I realized that the problem was much bigger than that, unfortunately… End of the story: 1/4 of the price of the notebook spent to fix it and a lot of headaches. (And thanks God that it could be fixed).

Another friend of mine have a HP “problematic” dv2000… His experience with his computer is similar to mine. The image of the LCD display shakes insanely without any reason… I’ve carried it to the same technical assistance that solved my problem and the dude there said that it was a common place problem of this series…

And oh… If you think that you have HP authorized services in Brazil you’re fully mistaken… The assistance of HP Brazil covers only notebooks made here (mine is imported) and doesn’t have authorized technical assistance stores.

I could keep talking about problems that I and other consumers have with HP Laptops like the absurd heating[3] the whole day, but I have to leave now …

One last thing: HP, stop selling crappy products and start to care more about your customers.

[1] – http://linux.dell.com/

[2] – http://h20338.www2.hp.com/enterprise/cache/309906-0-0-0-121.html

[3] – http://h30434.www3.hp.com/t5/Other-Notebook-PC-questions/HP-Dv4-1225dx-fan-heat-issue/m-p/239138

http://linux.dell.com/%5B2%5D

Fixing HP Pavilion 1225dx problems in Ubuntu

Hi All,

This post is about fixing some problems / issues with HP 1225dx + Ubuntu.

I had already tried the procedures that I’m gonna show here in my laptop, so i hope that it works just fine for you too.

Issue – Description – Solution:

Video – The default video driver that comes with a clean installation of Ubuntu works too bad with ATI 3200 (The VGA Card of this model) – To fix video issues just download the most recent video driver from ATI [1] and install it as a root user.

Sound (Older Versions) – I had no sound when I installed older versions of ubuntu (8.04, 8.10, 9.04). To fix this problem just edit  /etc/modprobe.d/alsa-base and add the following lines in the end of the file:

options snd-hda-intel enable_msi=1
options snd-hda-intel model=dell-m4-2

Sound (Earlier Versions) – With Ubuntu 9.10 I had the audio without installation or configuration of anything. However, when I tried to plug my headphone sometimes it wasn’t recognized. To fix it just add the  following line at /etc/modprobe.d/alsa-base.conf

options snd-hda-intel enable_msi=1

Keyboard and Touchpad locks up on wake up from suspend (Older Versions): The keyboard and touchpad were locked after a suspend action (Close the laptop lid and you can see if your having the same problem). In older versions of ubuntu you just have to add  “i8042.reset” (without quotes) in the end of the kernel loader line on /boot/grub/grub.conf.

The resulting line should be something like:

kernel /boot/vmlinuz-2.6.27-11-generic root=UUID=88b99fce-0f2b-421d-9071-5974649671ce ro quiet splash i8042.reset

Keyboard and Touchpad locks up on wake up from suspend (Earlier Versions): In Ubuntu 9.10 you should edit /etc/default/grub and replace the line

Hi There!

Hi there…

That’s the first post of this blog, right? WOW! Cool, isn’t it? =P

The intention of this blog isn’t having hundreds and hundreds of followers, so I’ll be more flexible about writing about things I want to and about things that I think that can help someone…

The main subjects of the posts will be Software Development and Linux, because those are the areas that I like to talk about. 🙂

So… Feel free to follow me on twitter or talk to me at freenode. You can have more informations about me at the “About” page. (seriously? heheh)

That’s all, folks.