Technical Articles

Practical articles, in-depth tutorials, and architectural insights on software engineering, AI, and systems.

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Error logs on Linux? How to filter journald with jq

Tired of reading massive log files? Learn to extract critical events from journald and turn them into JSON for fast and accurate troubleshooting.

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Automação•2 min

How to automate Chrome profile backup on Linux with Bash

Learn how to build a simple and efficient Bash script to backup your Google Chrome profile on Linux, ensuring your extensions and data remain secure offline.

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DevOps•5 min

How to convert JSON files to CSV in Linux via terminal

Learn how to quickly transform structured JSON data files into CSV tables on Linux using native command line tools like jq.

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BackendDevOps•4 min

EACCES Error in Node.js? How to Fix Permissions Easily

Learn the basics of operating system user permissions and discover how to resolve blocks when executing scripts or installing Node.js packages.

HardwareDevOps•4 min

How to monitor and limit server power consumption using IPMI

Learn how to monitor electrical telemetry and set power consumption limits on physical servers using IPMI in local infrastructure.

DevOpsHardware•4 min

How to repair corrupted GPT partition tables with gdisk

Learn step by step how to restore corrupted GPT partitions using the gdisk tool on Linux, repairing damaged headers and secondary backups.

DevOpsBackend•3 min

How to validate JSON schemas in bulk with the AJV CLI

Learn how to ensure data integrity by validating configuration files against JSON schemas automatically and efficiently using the AJV CLI.

RedesDevOps•2 min

Port already in use? How to use fuser to free up services

Is your service failing to start due to port conflicts? Learn how to use the fuser command to quickly identify and terminate processes blocking network ports on Linux.

DevOpsEngenharia•3 min

How to recover a corrupted Linux partition with TestDisk

Lost access to your data? Learn how to rebuild the GPT partition table and recover essential files on Linux using TestDisk step-by-step.

DevOpsProdutividade•2 min

How to generate performance charts in terminal with Gnuplot

Learn how to transform text logs into visual charts directly in the terminal using Gnuplot. A vital skill for engineers analyzing telemetry data on the fly.

RedesDevOps•3 min

Network slow? How to check switch latency via SNMP

Learn how to monitor your network switches using SNMP and snmpwalk. Detect bottlenecks and packet loss before they impact your production traffic.

RedesDevOps•2 min

How to use the ss command to monitor TCP connections on Linux

Tired of netstat? Learn how to use the ss command to list TCP sockets, identify linked processes, and analyze network latency with superior performance.

DevOps•2 min

How to automate Docker volume backups with Restic

Learn how to secure your critical Docker data using Restic. A practical guide to creating incremental, encrypted backups to S3 storage.