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Prototyping with a Node-RED container

coding container cloud

If the preceding posts on Node.js and MongoDB have been too complex for you, let me introduce you to a simpler drag-and-drop “flow-editor,” Node-RED.. It was developed and open-sourced by IBM, and is now hosted by the OpenJS Foundation (the same foundation that hosts projects like jQuery, and Dojo). I’ve used Node-RED for quick prototypes and demos, as it’s easy to explain each step of the flow. It saves a lot of coding effort and reduces errors buy providing built-in and pre-built third-party “nodes”.

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A bash script to search a CSV file

coding macos shell regex

I sometimes need to search a huge CSV file (13 MB), containing 21,000 rows and roundabout 40 columns, which Numbers takes half a minute to open. All I need to do is search and display the results of a few columns only... so I wrote a bash script to do this for me - and I was quite specific in that I wanted the results in color!

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Text Manipulation Cheat Sheet

coding macos shell regex

I recently had the "opportunity" to perform some text manipulation to get data from a huge log file into a spreadsheet. I had done this sort of work a long time ago as a developer, but had forgotten over the years. So I decided to compile a text manipulation cheat-sheet for macOS.

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