Technology Tales

Lightroom Killer Tips is a separate platform run by Scott Kelby, author, photographer and CEO of KelbyOne, an online training company focused on Lightroom, Photoshop and photography. Articles on the site also come from Rob Sylvan, a photographer and KelbyOne's Lightroom Help Desk Support Representative. The site covers organising, editing, quick tips, Lightroom Mobile and links through to paid online courses via KelbyOne. Recent posts have covered topics such as new Lightroom features, iPhone photography and Photoshop techniques.

Lightroom Queen is an independent educational platform run by Victoria Bampton, an Adobe Community Professional and Certified Expert, active since 2007. It provides tutorials, troubleshooting guides, reference books and free downloadable guides for photographers of all levels, covering topics such as performance optimisation, photo organisation, keyword management and catalogue recovery. An active community forum allows users to ask questions and solve problems, with threads addressing practical queries such as setting default library filters. For example, one thread explains how to persist a filter preset across sessions in Lightroom by using the "Lock Filters" and "Remember Each Source's Filters Separately" options found under the File menu's Library Filters settings. The platform is supported by both free resources and premium membership options.

The Internet of Things' Dangerous Future: Bruce Schneier

This distributed system emerged from converging trends in mobile computing, cloud services, artificial intelligence and the proliferation of smart devices, yet it introduces profound security vulnerabilities because attacking these systems proves easier than defending them whilst most software remains poorly written and insecure. The market cannot solve these problems because security failures create externalities affecting people beyond the original buyers and sellers, whilst legal restrictions actually inhibit researchers from exposing vulnerabilities.

Traditional approaches to securing dangerous technologies through rigorous testing clash with the software industry's preference for rapid iteration and updates, yet the stakes now include potential loss of life rather than mere data compromise. Addressing these challenges requires government regulation through a new agency with expertise spanning multiple sectors, since existing regulatory bodies operate in isolated domains whilst internet-connected systems cut across all jurisdictions. Such oversight must mandate security practices, protect personal data, legalise responsible security research and ensure systems retain basic functionality without constant internet connectivity.

Society must also reconsider the assumption that universal connectivity benefits everyone, potentially choosing to disconnect certain systems and move towards more distributed rather than centralised architectures. Solving these problems demands public-interest technologists who understand both policy and technology, as the major debates of this century will hinge on technical literacy among those making governance decisions about how interconnected systems should operate and who controls them.

Here is a possible way of resetting the CSS definition for an HTML element, class or ID:

#reset-this-parent { all: initial;

• { all: unset; } }

Browser support for the above may vary, though.

After seeing messages like "The authenticity of host 'hostname' can't be established" during ssh connections, I decided to investigate more and came up with the following solution:

sudo chown -v $USER ~/.ssh/known_hosts

My known_hosts file had gained root ownership so I could not write to it, so changing the ownership to that of my own user account sorted the problem. An alternative could be to change the group assignment using chgrp, and setting permissions using chmod, but what I did sufficed for my needs.

When I ran into trouble with accessing my own websites using my broadband, I found that the solution was to change DNS Lookup Service to what Google offers. This was done on the router side and the IP addresses used were 8.8.8.8 and 8.8.8.4.

Here's a way to convert DNG files to JPEG ones:

find -type f | grep DNG | parallel mogrify -format jpg {}

Hackintosh.com provides resources for installing and running various versions of macOS on non-Apple hardware, including step-by-step guides, video tutorials, lists of compatible systems and components and community forums for support. The site covers installation processes for macOS versions from Leopard (10.5), with significant challenges in areas such as audio, graphics and wireless connectivity. Users are advised to verify hardware compatibility and note that Apple does not endorse or support the use of macOS on non-Apple devices, which may be illegal in certain jurisdictions. Additional tools and databases, such as DSDT tables and kexts, are available to assist with hardware recognition and system configuration, while online communities offer troubleshooting assistance and shared experiences.

Here is a way to recursively delete folders and their contents in PowerShell:

Remove-Item .\foldertodelete -Force -Recurse

The Force switch silences any messages that otherwise would appear, and the Recurse switch is what gets directories removed.

Pydio is an open-source file server application that offers a secure, self-hosted alternative to cloud storage services, enabling users to manage and access files across devices with features such as WebDAV support, mobile applications and integration with external authentication systems. The article outlines a step-by-step guide for installing Pydio on a CentOS 7 server using a LAMP stack, including configuring a database, adjusting PHP settings, setting up Apache and completing a web-based installation wisard to create user accounts and workspaces. It also highlights the availability of multiple Pydio editions, ranging from a free community version to enterprise and ultimate editions, each tailored to different usage requirements and scalability needs.

ColorPicker.com

This tool provides a straightforward method for selecting and refining colour combinations, offering options to generate schemes based on complementary, triadic and analogous principles or to build custom palettes using an RGB picker, with the ability to save chosen colours for later use. Users can also input HEX values directly or manually adjust HSB and RGB parametres to achieve precise results, making it suitable for a range of design tasks such as developing brand identities or sourcing CSS colours. Designed to streamline the process of selecting appropriate colours for projects, it encourages user input through a feedback form to guide further improvements and is available freely for those seeking an accessible solution to colour selection challenges.