Traffic sumulation

This is a nice traffic simulation.. so, try it just for fun
Microsimulation of road traffic

Disk Recovery

Last month I found a hard disk damaged while trying to back it up with partimage, so I had to do some recovery using knoppix + ddrescue, I found a good step-by step know-how in cgsecurity which explained breifly how to do it... and finally I found a good story on hard disk recovery. Partimage is a really easy tool to backup... and even let me knew about hard disk errors... Cheers to Francois Dupoux and Franck Ladurelle creator of partimage and Antonio Diaz Diaz creator of ddrescue

The procedure booting with knoppix
Download latest version of ddrescue and compile it
$ wget http://download.savannah.gnu.org/releases/ddrescue/ddrescue-1.8.tar.bz2
$ tar xfj ddrescue-1.8.tar.bz2; configure; make
Turn off messages of console
$ dmesg -n3
Read good disk sectors
$ ./ddrescue -n /dev/old_disk /dev/new_disk rescued.log
Read damaged sectors
$ ./ddrescue -r 1 /dev/old_disk /dev/new_disk rescued.log

Wikipedia Infrastructure

Pretty nice that current infrastructure is: 200 application servers, 20 database servers and 70 servers dedicated to Squid cache servers... which squids servers are the ones that help maintain little cpu resources.

Besides, it uses Memcached and the Linux Virtual Server load balancer and also uses database sharding to set up master-slave relationships between databases.

Read more here

Google Reader notes

Finally, a cool option in google reader to add notes to share... read more at lifehacker

Picasa

I wanted to share pictures and tag them to explain every little detail, I found flickr but decided to use picasa as it has it's own file manager which I needed to quickly look for pictures I didn't have correctly indexed... I finally decided to make public some of the albums in webalbums which will be boxing sport related. I encourage you to at least use picasa as photo organiser.

Authentication on windows

I just found out what credentials on windows mean... and I needed to connect as administration to a remote PC (where I have a user account) with a command like:
net use \\remoteserver /d
net use \\remoteserver\share /user:MYUSER
So, it was as simple way to get things done.
Read more about credentials