Investigate Systemd DNS Resolver
January 17, 2025 Reading time: 2 minutes
DNS queries using Systemd Resolver can be difficult to grasp at the begining. Here are some commands that can help you understand how Systemd Resolver works under the hood.
Concatenate Videos Using ffmpeg
December 24, 2024 Reading time: ~1 minute
First enter your video files names into a text file like videolist.txt then execute this command.
ffmpeg -f concat -safe 0 -i videolist.txt -c copy output.mp4
Convert PDF to Image
December 22, 2024 Reading time: ~1 minute
pdftoppm -jpeg -r document.pdf doc_image
I Extracted Ganglion Cyst from My Foot, Second Time!
December 9, 2024 Reading time: ~1 minute
Recently I had an operation to extract a Ganglion Cyst from my midfoot, this was the second time it grew back again. The first time the cyst grew was five years ago; I had the operation at that time but maybe the doctor did not extract the cyst from the roots. I hope this time is the last.
Convert Image to WebP format
December 2, 2024 Reading time: ~1 minute
Convert image to WebP format. WebP is designed for the web with its smaller size which makes web pages loading faster without losing images quality.
ffmpeg -i input_image.png -c:v libwebp output_image.webpRecord Audio from Command Line
November 23, 2024 Reading time: ~1 minute
Install sox program
sudo apt install soxOpen the terminal and execute the following command. Your audio will be saved in a new file named "test.wav"
sox -t alsa default test.wavSave Your Routing Table
November 23, 2024 Reading time: 2 minutes
A Python program to save your routing table into a Batch script as a backup. You can also execute the script into another system for fast configuration or automation. The program will generate a new file under the same directory of the program with a name "network.save" that contains the script.
HTTP 1 vs HTTP 2 vs HTTP 3
November 22, 2024 Reading time: ~1 minute
I like this video. He presented different HTTP versions in a simple illustrated way easy to understand.
Don't Watch Gladiator II
November 15, 2024 Reading time: ~1 minute
Don't waste your time and money watching this movie. It does not have a good story, and the plot's events are not well connected.
The most out-of-context, hilarious, unbelievable, scene was the vessels battle in the Colosseum, which was filled with water and sharks circulating in the surrounding water. At that point, the movie dropped to 5/10 for me.
