Programster's Blog

Tutorials focusing on Linux, programming, and open-source

PHP Slim3 slim-framework

Slim3 Cheatsheet

A cheatsheet for working with the Slim3 framework.

KVM qcow2

Expand Qcow2 Root Filesystem

Expand your KVM guest's root disk and filesystem to add storage.

PHP

Creating Phar Files

Create your own phar files.

KVM snapshots

Managing External Snapshots With BASH Scripts

Manage external snapshots with BASH scripts because virsh doesn't fully support external snapshots in Ubuntu 16.04.

KVM qcow2

Qemu-img Cheatsheet

A cheatsheet for all things Qemu-img related.

PHP

Ubuntu 16.04 - Install PHP 7.2 From PPA

Install a later version of PHP on Ubuntu 16.04 by using a PPA from Ondrej.

PHP Symfony

Create Symfony Project

Install the Symfony PHP framework.

Git CI continuous-deployment testing Gitlab DevOps

Deploy Gitlab Runner With Docker

Deploy a Gitlab runner to unlock CI/CD capabilities in Gitlab.

MySQL benchmarking

MySQL - Benchmarking Varchar vs Text

Results of benchmark the difference between using the TEXT and using a large VARCHAR. The results surprised me a lot.

rsync

Ubuntu - Set Up Rsync Server

Configure your Ubuntu server to accept rsync connections.

PHP

PHP - CLI Progress Bar

Have your PHP application show a progress bar whilst it works.

MySQL UUID

MySQL Performance When Using UUID For Primary Key

Benchmarking the performance of using various UUID types as the primary key on database tables instead of an auto-incrementing integer.

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Programster's Blog Ⓒ 2025