The `ldd` utility is more vulnerable than you think. It’s frequently used by programmers and system administrators to determine the dynamic library dependencies of executables. Sounds pretty innocent, right? Wrong! It turns out that running `ldd` on an executable can result in executing arbitrary code. I researched this subject thoroughly and found that it was almost completely undocumented.

Not everyone can use iptables because its huge, and very confusing for newbies. Here are some easy to use firewalls for Linux..

One question for Linux gurus: Why is it that Linux/Ubuntu is said to be so secure..? Is it because simply no viruses are programmed for Linux (like Macs), or is there something special about Linux architecture/core that makes it less vulnerable to attacks..?

pdfedit
PDFedit is free and open source tool for manipulating PDF documents. You can use it to read, change and extract information from a PDF file
QPDF
QPDF is a command-line program that does structural, content-preserving transformations on PDF files.

Google is giving web masters access to the malicious code it finds in their web pages. If the Google bot detects malicious code when indexing a web page, search results pointing to this page will be tagged with an appropriate warning. Website operators can now use the Webmaster Tools to access detailed information about the affected code and trace a problem more quickly

I’ve already shown you how to view files with the cat command. In today’s post I’m going to show you how to use the GNU cat command for its originally intended purpose: for joining multiple files together.

For newcomers to the open source world, selecting a Linux desktop from the many available choices can seem overwhelming. But don't let that stop you! There's plenty of free expert advice available online to help you narrow the field and figure out which distro is likely to best suit your needs.

This can be achieved by using the ultra-lightweight text-based BitTorrent client "rTorrent".
If you are using Ubuntu, you can install