USB Standards Made Easy
The Universal Serial Bus, or USB, started as a revolutionary idea in the mid-1990s. Before USB,...
System Administration
LatestHow to Setup a Fast and Secure WordPress 5.0 – Ubuntu 18.04 LTS, PHP 7.3, MySQL 8.0, and More
Just going to go straight into the commands. This assumes you’ve configured your DNS and started a Digital Ocean droplet and have created a root-empowered user. If you’re looking to start using Digital Ocean, get...
Cloud Computing
LatestHow to Expand a Boot Disk on a GCE Instance
Google now allows you specify the size of your boot disk larger than 10GB when you create your instance. In any case, if you need to resize your boot disk for any reason, these are the steps I followed. Here I’ve attached...
Rails, Ruby
LatestRuby Classes, Modules, Mixins, and Inheritance
Classes Classes are one of the building blocks of object-oriented programming. Think of them as blueprints for creating objects. When we just throw variables and methods inside a Ruby file, it’s very loosely associated....
MySQL / Percona
LatestMySQL Quick Fix – SSL connection error: socket layer send error (Mysql2::Error)
Assume you’ve already verified your certificates and keys on the sever side (checksum should be the same): openssl x509 -noout -modulus -in mycert.pem openssl rsa -noout -modulus -in mykey.pem mysql> show variables like...
15 Ways to Write a Good Hook for YouTube Shorts
In the fast-paced world of YouTube Shorts, grabbing your audience’s attention within the...
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46 Tips for Rapid YouTube Shorts Growth
If you’re looking to grow your YouTube channel quickly and effectively, YouTube Shorts is...
Read MoreBlue Bottle Espresso Parameters
Blue Bottle seems to have removed the parameters for some of their popular espressos. Luckily, I took screenshots years ago!
Read MoreNegative Search AND Delete Directory NOT Containing Certain Files
find . -mindepth 1 -maxdepth 3 -type d -not -exec sh -c ‘ls -1 “{}” | egrep -iq “mkv|iso$”‘ \; -exec rm -rv {} +
Read MoreHow To Run a Ruby Cronjob with RBENV and Ubuntu 20.04 LTS
For those who are stuck with running cron jobs with Ruby scripts. The non-interactive shell “bash -lc” might not work. The sure shot way is to just export your path in the job itself. You might be getting errors like...
Read MoreDocker Alpine 3.5 DNS Problem – Temporary Error
Sometimes Docker’s networking acts funky. I had the following error while using docker-compose with a ruby:2.7.1-alpine3.11 image. RUN apk add –update –no-cache curl fetch...
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How To Get The Last Record of a Group in MySQL 8
If you’re running MySQL 5.7.5 or higher, you might’ve seen this error while trying...
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Docker Tutorial 2020 – Version 19.03.8
There are headaches and heavy costs associated with hypervisor virtualization. There was a time I...
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Fastest Portable Hard Drives 2020
The Contenders Toshiba HDTB420XK3AA Canvio Basics 2TB Portable External Hard Drive USB 3.0WD 4TB...
Read MoreHow to Warm Up FastCGI Cache on Your WordPress Site
Sometimes we run blogs that are updated frequently and at predetermined intervals. It’s useful to warm up the cache after content has changed. I’ve used plugins but they don’t seem to work well. I’ve...
Read MoreNetgear X4S vs. Asus RT-N66U Dark Knight vs. Trendnet TEW-680MB
Just spent the day digging through a box of old gear to relegate for network extension duties. These tests were done in bridge mode from about 20 ft from the main router through 2 walls.
Read MoreWhen to Define Your Own Custom Ruby Iterator?
General rule of thumb is if you have a collection of objects, you should build custom iterators so that users could readily use them like they do with other collection such as Array, Hash, File, etc. The easiest way to do this...
Read MoreHow to Write Your Own Iterators in Ruby
Generally if your class has an array/hash, sometimes you don’t want to expose the implementation of those collections outside of the object. Creating your own iterator will make your object easier to use. class Headphone...
Read MoreHow Ruby Local Variables Interact with Blocks and Their Surrounding Scope
Sometimes the scope of a local variable is a bit confusing when working with blocks. For example, the following will result in an “undefined local variable” for variables “x” and “bacon”...
Read MoreHow Unicode Plays a Part in Your Software – Encoding & Character Sets
Introduction There was a time when you could determine the size of a file by counting the number of characters it had. One character equates to one byte. Simple. In fact, it was how I found the office perpetrator who printed out...
Read MoreHow to Setup Let’s Encrypt on Apache2 and Ubuntu 14.04 LTS
After years of having to manually renew certificates (I’ve used StartSSL in the past), Let’s Encrypt is finally live and will allow you to automate this process by installing an agent and a cron job. Here I’m...
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