KSH93 Custom Builtins 1

The majority of GNU/Linux and Unix shells are not designed for extensibility or embeddability. An exception is the the Korn Shell which includes support for runtime linking of libraries and custom builtins and accessing shell internals. This post shows you how to write your own simple Korn shell custom builtins.

Position Independent Executables

Over the last few years, there has been a movement in GNU/Linux to produce more secure code. One of the techniques that has become commonplace is what is called Position Independent Executables (PIE). This post explains PIE and how to check PIE binaries.

UEFI Shell Application Examples

The three examples listed in the EFI Shell Developers Guide have never been updated to reflect TianoCore UEFI development environment. I modified the sources for the three examples so that they now successfully build in the TianoCore EDK and provide details of how to incorporate them into the TianoCore build environment.

Spoof an IPv4 ARP Response

This post demonstrates how to spoof the response to an ARP request and thus poison the ARP cache of the requesting computer.