Hi. Today I’ll talk about the extensions to the C language family introduced by the GNU C.
The GNU C provides several language features not found in ANSI standard C. These extensions are available both in C and C++. The `-pedantic’ option directs GNU CC to print a warning message if any of these features is used.
The list of these features is very long: often we use them implicitly. I will show to you only those I consider most useful and “strange”: Read more…
In this post I’ll explain to you how to make a *unix backdoor using a “port knocking” scheme. That is, if we’ll “knock” to some TCP ports that we have initially decided, our program will open a backdoor for us (but only for us :) ).
How does the “port knocking” scheme work? The attacker decides a particular sequence of packets that will be sent to a compromised server where the backdoor is running. When the backdoor program will receive this particular sequence then it will give to the attacker the server’s shell.
Hi. Sometimes you can’t connect directly to internet, because you have to go through a proxy (i.e. working environment).
Did you ever have to set up an http proxy on linux shell in order to (i.e) download a new package or manually update your distribution with a packet manager?
If so, you need to be a superuser. If you use the “sudo” command, you will probably stumbled across the inability to export variables from the user environment to the “sudo” one.
If you try to compile r5u870 driver for Ricoh webcams under Ubuntu 10.10 you’ll fail due to a recent renaming of some functions in the linux kernel.
usb_buffer_alloc() is renamed to usb_alloc_coherent() usb_buffer_free() is renamed to usb_free_coherent()
For more information: http://kerneltrap.org/mailarchive/git-commits-head/2010/4/30/32383
To avoid this problem, make this substitution in the usbcam_util.c file that can be found here: ttp://www.palmix.org/download/r5u870_k2.6.30_i386.tar.bz2
Hi. Today Today I leardned about the relationship between the name of the Debian’ releases and the names of the characters of “toy Story”. So I want to explain it to you.
The names of the Debian’ releases come from “Toy Story”, the famous Pixar’s film (link). This is true since the release 1.1, released in the 1996. By this time, Bruce Perens had taken over leadership of the Project from Ian Murdock and Bruce was working as system programmer at Pixar.