Tech Support


When I face a technical problem, I write the solution. This section includes tutorials and troubleshootings of any technical issues.

Disable macOS Auto Update

How to stop macOS from automatically downloading and installing new software updates.


How to Concatenate Multiple Videos Into a Single Video File with FFmpeg

A simple guide on how to merge two or more videos in order into a single video file by using ffmpeg


Fixing exFAT Drives on macOS

How to repair exFAT external storage on macOS


Batman Math Equation

How to draw Batman symbol with only math formula


How to Fix a Corrupted Video with FFmpeg

Learn how to repair broken or corrupted videos using the ffmpeg command-line tool.


How to Fix 'gpg: decryption failed: No pinentry' on macOS

Step-by-step guide to resolve GPG decryption failures caused by missing pinentry on macOS.


Speedtest CLI: Resolving HTTP Error 403 Forbidden

Learn how to check internet speed from the terminal and fix HTTP 403 errors with Speedtest CLI.


Local Area Network (LAN) Bandwidth Speed Test

How to check the upload and download network speed (bandwidth) between computers in a local area network


FiberHome GPON ONU Router / Modem Default Admin Password

What is the default admin password of a FiberHome router?


Free Courses with Credly Badges

A collection of free courses offering Credly digital badges.


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