Welcome to My Blog on Computing, Automation, Cybersecurity, and Other Topics
Bringing the Unix Philosophy to the 21st Century
Do one thing well. For command-line utilities to do their one thing “well” they must include standardized machine-readable output. Linux and all of its supporting GNU and non-GNU utilities should offer JSON output options.
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Tips on Adding JSON Output to Your CLI App
Best practices when adding a JSON output option to your command-line application.
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Working with JSON in Various Shells
In this article I give a quick snapshot of what it’s like to work with JSON in various traditional and next generation shells. Traditional shells like Bash and Windows Command Prompt (cmd.exe) don’t have built-in JSON support and require 3rd party utilities. Newer shells like NGS, Nushell, Oil, Elvish, Murex, and PowerShell have JSON serialization/deserialization and filtering capabilities built-in for a cleaner experience.
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Practical JSON at the Command Line
Effectively use JSON data at the command line with jc, jq, and Bash. This article provides practical examples of how to improve your scripts with JSON.
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Parsing Command Output in Ansible with JC
Use the jc community.general Ansible filter plugin to parse the output of commands run on remote hosts.
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Parsing Command Output in Saltstack with JC
Use a jc Output and/or Serializer Module to parse the output of commands run on Saltstack Minions.
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Parsing Command Output in Nornir with JC
Use jc with Nornir to parse the output of commands run on remote hosts.
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Microservice Security Design Patterns for Kubernetes (Part 1)
In this multi-part blog series, I will describe some microservice security design patterns to implement micro-segmentation and deep inspection in the interior of your Kubernetes cluster to further secure your microservice applications, not just the cluster. I will also demonstrate the design patterns with working Proof of Concept deployments that you can use as a starting point.
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Jello: The JQ Alternative for Pythonistas
jello works similarly to jq but uses the python interpreter, so you can iterate with loops, comprehensions, variables, expressions, etc. just like you would in a full-fledged python script.
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JSON Tables in the Terminal
jtbl is simple and elegant. It just takes in piped JSON or JSON Lines data and prints a table. There’s only one option to turn on column truncation vs. wrapping columns if the terminal width is too narrow to display the complete table. It ‘does the right thing’.
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