The advantage of GA is that it implements open standards developed by the Initiative for Open Authentication (OATH), meaning that any authentication method that implements this standards can use GA as authentication method(For example I use GA for my Dropbox account too). You can also implement your own version of GA, go to to get more info.

To my surprise there was already a perfect PAM module for GA. Installation could not be more straight forward.

$ git clone https://code.google.com/p/google-authenticator/
$ cd google-authenticator/libpam
$ sudo make install


Now the PAM module is installed but not enabled yet. Before enabling it, lest’s synchronize it with GA. Run $ google-authenticator and follow the instructions on the screen. If all goes correctly you should see a QR code that can be scanned by your phone.

Now you can modify /etc/pam.d/sshd for ssh logins or /etc/pam.d/login for tty logins. In both cases just append auth required pam_google_authenticator.so to the file.

For ssh logins you will also need to enable ChallengeResponseAuthentication yes in /etc/ssh/sshd_config

Now you have 2-factor authentication for ssh and your ttys!

Controls:

Remember that:
-The ‘queue’ command is not ready yet.
-The ‘search’ command is still on testing phase.

Controls:

I also have some scripts that have helped me to quickly deploy OpenStack. This scripts are in no way an automated tool for installing OpenStack, but rather my personal approach with some shortcuts. If interested look at it but use it on your own risk.

https://github.com/cesarramirez?tab=repositories

While working on the big project of OpenStack and the mess that can be to manage a distributed infrastructure, it came to my mind to develop a game Advanced Wars but with a more social and scalable aspect. I have the initial code is been developed at:

https://github.com/cesarramirez/Z

If you do not know what SonicFlow is, it is described as “A server application to manage a shared music queue that uses the Grooveshark API”. For more info you can go to:
https://github.com/acm-ndsu/SonicFlow

Controls:

http://aws.amazon.com/

http://www.openstack.org/

BTW, you may notice the lack of title and some other content. Just give me couple days to get those up.

.

I currently have three layers in my network topography. The first layer is going to be my router, which provides internet access to all the layers on top as well as managing port redirection. The second layer is going to be a 100 Mb/s WRT router for connecting all my devices that support only up to 100 Mb/s, this router also provides a wireless access point for my laptop as well as phones and game consoles. The third layer is a 1Gb/s router that interconnects my three main computers, Keroro(Dekstop), Giroro(Server/Media) and Dororo(Web-server).

That is all I have for today.

https://github.com/cesarramirez/ADG-Android_Drawable_Generator

What this tool is:

When developing an Android app, you are required to design images with different densities for all the different screen resolutions. Once you have your base high-resolution image, you need to scale to four different categories(low, mid, high and extra high). The mid size will be a base size for all other sizes. The process of generating this images can be tedious as it is just a trivial process. Here is where adg comes in handy.

Two run adg you need at least two parameters, original image and base size. With a command as simple a:

adg image.png 30;

You will have the four folders for all resolutions with the image correctly resized. You can even do:

adg image.png 30 –outdir <you project folder>/res;

And the output images will be places on the right directory.

If you are interested, read the README located in github and you will find the complete list of options and examples.

Changes:

The structure of the script was completely rewritten, I reorganized the Getopt for a better and more clear set of arguments and flags. I also introduced a more modular aspect for the script, allowing the user to disable or enable features or event pass parameters for variables such as output location or output name.

Another big change for me was that the script is documented with in-line comments and a Readme that describes almost all the feature.