Shell scripting is an often forgotten programming environment, relegated to simple automation tasks and little else. In fact, it’s possible to achieve much more complex tasks in the shell. As an example, here’s [calebccf] with an emulated 6502 system in a busybox ash shell script. What’s in the emulator? A simple 6502 system with RAM, […]
Are you familiar with huffman encoding? That’s where you pick shorter codes for more frequent letters. Morse code is the same way. Shorter characters are the ones you are most likely to use. [Matheus Richard] had the same idea for optimizing your workflow in the Linux shell. The idea is to measure what commands you […]
Lisp is one of those programming languages that seems to keep taunting us for not learning it properly. It is still used for teaching functional languages today. [Adam McDaniel] has an obvious fondness for this fifty-year-old language and has used it in several projects, including their own shell, Dune. Dune is a shell designed for […]
One of the most universal experiences of any Linux or Unix user is working through a guide or handbook and coming across an almost unbelievably complex line of code meant to be executed with a shell. At the time of encountering a snippet like this it’s difficult to imagine any human ever having written it […]
[Marek Gibney] poses an interesting puzzle. What does the following bash command line print? ( echo red ; echo green 1>&2 ) | echo blue You’d like to think it prints three lines: red, green, and blue. But would you be surprised to find out that it can sometimes output “blue green” and sometimes just […]
When using an Arduino, at least once you’ve made it past blinking LEDs, you might start making use of the serial connection to send and receive information from the microcontroller. Communicating with the board while it’s interacting with its environment is a crucial way to get information in real-time. Usually, that’s as far as it […]