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Hugo development environment in WSL 2

Windows Server / By / 19 August 2020
My New Hugo Site created in WSL 2 on WIndows 10

How to install and configure Hugo for static site development in WSL on Windows 10.

Do you find it too difficult to install Go or Hugo in Windows for your static site development? Have you tried Windows Subsystem for Linux (WSL) 2? Using a default Ubuntu 20.04, it is pretty easy to install Hugo, set up your development environment and configure Hugo to listen on your Ubuntu’s IP address instead of localhost / 127.0.0.1. This makes your Hugo development site accessible for browsers in Windows 10. Neat, right?

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Release hold queue email in Postfix – postsuper

GNU Linux / By / 18 August 2020

How to flush Postfix’ mail queue from the command line and delete all mail from the queue? Easy, use the Postfix postsuper command as explained in this post. The postsuper command controls different types of queues in the Postfix mail system, like the deferred or hold queue. This post shows you some Postfix queue operations to maintain your mail servers.

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Benchmarking WordPress, simple load & speed testing with ApacheBench

WordPress / By / 2 April 2020

WordPress load testing with ApacheBench.

ab is a small benchmark utility that comes with Apache. It’s a really simple HTTP load generating tool, ideal for a simple WordPress load & speed test. How fast does your WordPress site respond? How many HTTP requests per second can your server handle? These are questions on which ab can shed some light.

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Tunnel RDP through SSH & PuTTY

Windows Server / By / 12 July 2021
SSH port forwarding in PuTTY

How to tunnel Remote Desktop (RDP) over SSH with PuTTY.

Have you ever been in a situation where you needed to perform remote administration on a Windows Server, and the RDP port 3389 is blocked on a firewall? Did you know you can tunnel RDP over SSH with PuTTY? This particularly comes in handy when there is no VPN available to the remote network… Here is how to set up a RDP SSH tunnel with PuTTY.

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Turn off swap

GNU Linux / By / 7 July 2020

Not every Linux server I maintain needs to have a swap partition and to start swapping. For instance, the MySQL servers all have more than enough RAM on board to do their work. Yet, when a swap partition is enabled Linux starts swapping, which may degrade MySQL database performance…

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Monit monitoring on Ubuntu 14.04 VM on Hyper-V

GNU Linux / By / 27 July 2020

In this post you’ll learn about setting up a Monit monitoring service for your websites and services. Monit is a free and open source service monitoring application which can perform various event-based actions. Monit can send email notifications, restart a service or application, or take other responsive actions. We set Monit up on a Ubuntu 14.04 VM, built on Hyper-V. And we use Monit to monitor several websites, and send out notifications on downtime.

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Convert decimal to hex in Bash?

GNU Linux / By / 27 August 2020

A quicky for my archives: convert decimal to hex in Bash, and convert hexadecimal to decimal, in Bash. In mathematics and computing, hexadecimal (also base 16, or hex) is a positional numeral system with a radix, or base, of 16. It uses sixteen distinct symbols, most often the symbols 0-9 to represent values zero to nine, and A, B, C, D, E, F (or alternatively a-f) to represent values ten to fifteen. If you want to convert hexadecimal values to decimal and decimal values to hexadecimal, here’s how. All on the bash prompt…

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How to delete all MAILER-DAEMON emails in Postfix queue

GNU Linux / By / 19 August 2020

How to delete all MAILER-DAEMON emails from your Postfix queue, when it matches a sender or recipient email address condition. When a large scale spam run was sent through your mail servers, you need to clean up and remove those spam messages. Doing so guarantees normal, valid email messages being sent quickly, and the spam messages never leave your queue. In Postfix, there are various similar commands to delete messages from the Postfix mail queue. Based on the Message-ID and/or email address…

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Minify JavaScript, CSS and compress images

WordPress / By / 18 March 2020

Fire-and-forget JavaScript and CSS minification and PNG image optimization on the Linux-, Mac OS X and Windows command-line interface. Using OptiPNG and YUI Compressor

Optimize PNG images and minify JavaScript and CSS files, the easy and fast way? With YUI Compressor and OptiPNG on the Windows-, Linux- and macOS command line of course! Compacting HTML, CSS, and JavaScript can speeds up your website because of smaller and faster downloads, parsing, and execution time.

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How to test SMTP Authentication and StartTLS

Security / By / 10 November 2020

How to test SMTP authentication and StartTLS using the command line?

When investigating SMTP authentication issues, particular over TLS encrypted SMTP connections, it’s always handy if you are able to test the SMTP authentication and StartTLS connection. Preferably from your command line. This post shows you how to test SMTP servers, verify SMTP authentication and StartTLS encrypted connections from the Linux and Windows command line.

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