Tutorials
Step-by-step technical guides on Docker, Linux, Python, Go, and more.
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How to use nix with catalina
After Catalina upgrade /nix will not be writable. In this tutorial, we explain step by step how to use nix with catalina by creating a volume to mount /nix on it. Read the full tutorial to find step by step
How to disable sip mac os catalina
In this brief tutorial, we explain how to disable SIP. You will need to start on recovery mode and from the terminal execute: csrutil disable. Make sure you understand what it means to disable SIP, read here for more information.
Nginx improve TTFB latency tutorial
In this tutorial, we are going to explain how to improve page speed when using nginx. The article focuses on TTFB (Time to first byte) to improve google page speed. We will focus on nginx using HTTPS. Check our tutorial to fix the TTFB issue.
How to enable nginx enable gzip
Follow this guide to enable compression using gzip. By default nginx compresses response with text/html mime type. Using
GitLab CI: Push Docker Images to Registry
In this tutorial, we are going to explain how to automatically build and push docker images using gitlab CI. The tutorial will cover best practices and how to create a docker image with gitlab ci.
Youtube api: download all videos from channel
In this tutorial, we are going to explain how to use YouTube API to fetch all videos on a channel.
Linux: Find Largest Files with du Command
To find the largest file in a directory use the command: sudo du -a / 2>/dev/null | sort -n -r | head -n 20, please check here for more information
golang open file and iterate lines
In this tutorial, we are going to explain how to parse a file with go and iterate lines of a file.
How to disable Kali Linux auto-update
Follow this steps to disable apt-get auto updates for Kali: open dconf-editor, then go to org -> gnome -> software, Select 'download-updates'. Finally Scroll down until the end and set
Go Type Conversion Guide: rune to int, string to int, int to string (2026)
Complete Go type conversion guide 2026: rune to int with int(), string to int with strconv.Atoi, int to string with strconv.Itoa, byte to string, int64 conversions. All with working code examples.