linux  Battery Life  Power Management  Laptops  TLP 

Some tips to improve laptop battery life on Kubuntu 18.04 (mostly applicable to Ubuntu and other linux variants as well).

rsync  linux 

Better file/directory copying with rsync; a fast, versatile, remote (and local) file-copying tool

Ubuntu 16.04  PHP  PHP 7.0  PHP 7.1 

How to upgrade from PHP 7.0 to PHP 7.1 on Ubuntu 16.04 LTS (Xenial)

yum  CentOS  package management  linux  system administration 

A quick reference for Yum - the CentOS package manager.

KDE Wallet  KDE  SSH Keys  ssh-agent  ksshaskpass  Kubuntu 

How to setup KDE Wallet for use with SSH keys with ssh-agent and ksshaskpass.

PHP  Composer 

How to create a new PHP project from scratch using composer.

PHP  PHP functions  quick tips  web development 

A better way to perform intermediate to complex string replace routines in PHP.

linux  KDE  Kubuntu  Kubuntu 18.04 

Notes on setup and preferences for Kubuntu 18.04

Snippet  shell scripting 

Quick shell script snippet to check if a given program is installed.

CSS  SVG  web design  quick tips 

A quick way to change the background color of an SVG image defined in CSS using the mask property.

HTML  HTML Validation  jQuery  Snippet 

Quick workaround to compensate for a fixed header/nav element obscuring the display of native HTML validation messages.

PHP  CLI  PHP Scripting  Boilerplate 

Options for creating quick PHP command line scripts

Reference  Markdown 

Quick reference for for Markdown syntax. Markdown is a simple markup language used for composing text documents.

SSL  TLS  HTTPS  Lets Encrypt  Reference  Certbot 

A handful of commonly used Certbot commands used for managing Let's Encrypt certificates.

Mac  command line  Perl Utilities - rename  Perl  Homebrew  Perl utilities 

Using the Perl 'rename' command to batch rename a group of image files on the MacOS command line with Homebrew package manager.