Anardil

A spot of sunlight

Articles with the bash tag

Wed 26 December 2018

Programming

By Austin

Devbot

Introduction Some of using computers is inevitably repetitive: checking for updates, backing up files, maybe clearing some logs. Scripts are a great way to automate some of the logic around these tasks, but you have to remember to run them or they...

Sun 09 September 2018

Programming

By Austin

Stream Programming

Introduction Most simple iterative programming tasks can be rephrased in terms of a 'map' or 'reduce' operation. The advantage here is that if we can work our problem into a map - reduce problem, we can easily increase parallelism. A simple example...

Mon 30 July 2018

Programming

By Austin

Dynamic Shell Scripting

Summary We can use declare, eval and text manipulation tools like awk and sed to dynamically redefine shell functions based on their content or name. This allows us to add lines or generate entirely new functions. Introduction Bash and other shell...

Sun 15 July 2018

Programming

By Austin

AutoCLI

Summary AutoCLI simplifies managing scripts by auto generating option menus, all in bash, without any dependencies. Sub menus, customization, and positional arguments are all supported. See autocli.sh on GitHub for the source and more examples. The...

Mon 13 November 2017

Programming

By Austin

Practical Coprocesses

Introduction Coprocesses expose a way to run a subshell asychronously, while maintaining full communication through pipes. In a typical script, you can run commands in the background (asychronously) with the & operator. This allows tasks to be worked...

Sun 02 April 2017

Programming

By Austin

Hal

Introduction Hal is a artificial intelligence I wrote for the Minecraft server I run. Here I hope to shed some light onto what he does and how he works. I'm going to run with the anthropomorphized 'he' even though Hal is really just a bunch of shell...