Shared libraries that are dynamically linked make more efficient use of disk space than those that are statically linked, and more importantly allow you to perform security updates in a more efficient manner, but executables compiled against a particular version of a dynamic library expect that version of the shared library to be available on the machine they run on.

I recently had the need to embed a file in an executable. Since I'm working at the command line with gcc, et al and not with a fancy RAD tool that makes it all happen magically it wasn't immediately obvious to me how to make this happen.

Many companies are beginning to see the intrinsic value of open source software for the enterprise but as businesses piecemeal solutions together from a variety of options, it's easy to lose track of each app's updates and revisions -- leading to potential security issues from unknown or undocumented code.

"If you spend a lot of time creating new shell scripts, be they plain shell or scripting languages such as perl or python, then it can be very useful to make new scripts be executable by default. Here we'll show two simple recipes for GNU Emacs and vim to do just that..."

Dynamically linked shared libraries are an important aspect of GNU/Linux®. They allow executables to dynamically access external functionality at run time and thereby reduce their overall memory footprint (by bringing functionality in when it's needed).

Linux and Free Software is written by clever programmers. As such, undocumented features creep in to the most mainstream of applications. We call these Easter Eggs, because you have to hunt them.

Here are a few of my favorites.

Linux administrators cannot live by the GUI alone. That's why we've compiled the most essential Linux commands into this convenient guide. We designed this guide specifically for Linux managers and system administrators as a reference library of only the most useful utilities. By learning a few simple tools, command-line cowards can turn into scripting commandos, getting the most out of Linux by executing kernel and shell commands.

A utility to multiplex ssh dynamic tunnels. Frequently, for instance when proxying a torrent client through a tunnel established with ssh -D, the tunnel will be swamped by traffic. sshsplit spawns multiple instances and distributes the load among them.

If you use Windows software on Ubuntu 10.04, chances are you've encountered the new feature in Lucid Lynx that prevents .exe files from being run without the executable bit set.  This might be good and well for some users, but is it really the best approach to security?  Here are some thoughts.