Dimas Maulana

This guide will walk you through setting up a system service to automatically launch your desired VirtualBox VMs, saving you precious time and effort.

Configure Autostart Properties

• Create a file named autostart.properties in the folder C:\Users\Admin\.VirtualBox.
• Inside the file, define the following:

1
2
3
4
5

default_policy = deny
Admin = {
    allow = true
    startup_delay = 10
}

• default_policy = deny: This sets the default policy to deny all autostarts.
• Admin = { allow = true; startup_delay = 10 }: This allows the user “Admin” to start VMs with a 10-second delay.

Set System Variable

• Create a new system variable named VBOXAUTOSTART_CONFIG and set its value to C:\Users\Admin\.VirtualBox\autostart.properties.

Install the VirtualBox Autostart Service

• Navigate to the VirtualBox installation directory: cd "C:\Program Files\Oracle\VirtualBox"
• Run the following commands:

1
2

.\VBoxAutostartSvc.exe install --user=Admin
.\VBoxManage.exe modifyvm "virtual-pc" --autostart-enabled on

• Replace "virtual-pc" with the actual name of your VM you want to autostart.

Check and Start the Service

• Use the sc command to check the service status: sc query VBoxAutostartSvcadmin-pcadmin
• Start the service: sc start VirtualBox Autostart Service VBoxAutostartSvcadmin-pcadmin

Congratulations! Your VirtualBox VM is now set to autostart when your system boots.

You want to fixing two common issues related to Nextcloud SSL and an SVG error related to ImageMagick. Let’s break down these instructions into steps for clarity:

Fixing SSL Issue in Nextcloud

If you’re encountering SSL-related issues in Nextcloud, you can try the following steps:

In this guide, we will walk you through the process of creating scripts to backup and restore a WordPress website running in Docker Compose. These scripts will help you safeguard your WordPress data and quickly restore it if needed.

Backup WordPress Volumes

Step 1: Create a Backup Script

First, you need to create a backup script. This script will use the futurice/docker-volume-backup Docker image to back up the volumes associated with your WordPress and MariaDB containers.

In Bash, you can trim whitespace characters from a variable using various methods, as shown in your code. Here’s a breakdown of the different approaches:

1. Remove Leading and Trailing White Spaces:

   1 2	NEW_VARIABLE="$(echo -e "${VARIABLE_NAME}" | tr -d '[:space:]')" # NEW_VARIABLE='aaa bbb'

   This method uses the tr command to delete all whitespace characters, both leading and trailing, in the variable VARIABLE_NAME.

2. Remove Only Leading White Spaces:

   1 2	NEW_VARIABLE="$(echo -e "${VARIABLE_NAME}" | sed -e 's/^[[:space:]]*//')" # NEW_VARIABLE='aaa bbb '

   Here, sed is used to remove only the leading whitespace characters from the variable.

If you need to change the domain URL of your WordPress site, you can use WP-CLI, a powerful command-line tool for managing WordPress. Changing the site URL is a common task, especially when migrating your site to a new domain. Here’s a step-by-step guide on how to do it with WP-CLI.

1. Backup Your WordPress Database

Before making any changes, it’s crucial to create a backup of your WordPress database. This ensures that you can restore your site if anything goes wrong during the URL change process.

When working with Docker containers on Windows or Mac, you might need to access the IP address of the host machine from within the container. Docker provides two convenient DNS names that you can use to achieve this: host.docker.internal and gateway.docker.internal.

Using host.docker.internal

The DNS name host.docker.internal allows you to access the IP address of the host machine from within a Docker container. This is particularly useful when you need to communicate with services running on the host, such as a development server.