What Do You Use to Debug Linux / UNIX C/C++ Programs?

Posted on in Categories Ask nixCraft, GNU/Open source, Linux, programming, UNIX last updated February 24, 2009

The purpose of a debugger is to allow you to see what is going on inside another program while it executes. It is useful to find out what another program was doing at the moment it crashed. I know most people will recommend GNU gdb, Nemiver, Valgrind or IDE such as Eclipse. I use gdb when it is really required; otherwise I debug the old fashioned way using printf() or cout statements.

What Is a Content Delivery Network (CDN)?

Posted on in Categories Content Delivery Network last updated February 20, 2011

A CDN (also known as content distribution network) is nothing but a group of servers (system of computers) spread across the globe. The main is to optimizing the flow of digital content (such as css, images, JavaScript, video) and speed up web application to end-users. CDN utilizes advanced software, DNS, storage and networking technologies for organizing your data.

Security Through Obscurity: MAC Address Filtering ( Layer 2 Filtering )

Posted on in Categories data center, fedora linux, FreeBSD, Gentoo Linux, GNU/Open source, Hardware, Iptables, Linux, Networking, RedHat/Fedora Linux, Security, Ubuntu Linux, UNIX, Windows, windows vista, Wireless networking last updated February 18, 2009

MAC Filtering (layer 2 address filtering) refers to a security access control methodology whereby the 48-bit address assigned to each network card is used to determine access to the network. Iptables, pf, and IPFW can block a certain MAC address on a network, just like an IP. One can deny or allow from MAC address like 00:1e:2a:47:42:8d using open source firewalls. MAC address filtering is often used to secure LAN or wireless network / devices. Is this technique effective?

Howto Upgrade Debian 4 Etch to Debian 5.0 Lenny

Posted on in Categories Debian Linux, GNU/Open source, Howto, Linux, Linux desktop, Linux distribution, Security, Troubleshooting last updated February 16, 2009

Debian version 5.0 has been released. It is recommended that you upgrade the system to latest version. Upgrading remote Debian server is a piece of cake. In this tutorial, you will learn about upgrading Debian Linux server from Etch to Lenny over ssh session.

Download Debian Linux 5 Lenny ISO / CD / DVD Images

Posted on in Categories Debian Linux, Download of the day, Linux, Linux desktop, Linux distribution last updated October 18, 2013

Debian GNU/Linux version 5.0 has been released ( jump to download ) after 22 months of constant development and available for download in various media format. Debian GNU/Linux is a free operating system which supports a total of twelve processor architectures and includes the KDE, GNOME, Xfce, and LXDE desktop environments. It also features compatibility with the FHS v2.3 and software developed for version 3.2 of the LSB.

Update: There is a newer software of this software available:
Download Debian Linux 7 Lenny ISO / CD / DVD Images

Debunking the "Linux is virus free" Myth

Posted on in Categories Debian Linux, Howto, Linux, Linux desktop, RedHat/Fedora Linux, Security, Shell scripting, Ubuntu Linux, Windows, windows vista last updated February 11, 2009

Is Linux is virus free? The author of foobar blog provides some insight about the same. Linux users can’t just catch a virus by email or downloading malware from the Internet, contrary to “those Windows users”. From the foobar blog post:

Then you save an email attachment under Linux, the execute flag is normally NOT set and thus, the file can’t be executed just by clicking on it. So, no luck?