How to enable hibernation on Fedora
Configure your Fedora Workstation’s boot environment to support system hibernation/suspend-to-disk. Lets you fully power-off your computer and resume your work later.
Latest blog entries
How to auto-lock your computer on a schedule (e.g. at bedtime)
Get instructions for how to configure your computer lock itself at a specific time (such as your bedtime) for macOS, Windows 10, and Linux.
Ctrl blog is now available as an Onion site
You can now visit Ctrl blog through a new censorship-resilient mirror powered by the Tor Project’s Onion Network.
Promote your Onion site with the Onion-Location HTTP header
A new HTTP header enables websites to redirect their visitors using the Tor Browser to their more secure Onion site.
Genuine Roomba replacement parts vs off-brand clones
I bought authentic and off-brand Roomba 900-series replacement parts to compare their perceived quality. The differences are quite small.
Fun with Apache HTTPD and subrequest variable inconsistencies
Why does the REQUEST_URI variable return /index.html and not / when requesting a directory? Blame it on the subrequest for the DirectoryIndex file.
How to block web browser-based localhost port-scans
Websites are port-scanning your localhost. Here’s how to stop random websites from knowing what services are running on your device.
Embed XMP sidecars into image files with embed_xmp
I made a new program for embedding XMP sidecar files (.xmp/.xml) into JPEG, PNG, SVG, and WebP image files.
Google Authenticator enables device-transfers, no back up/export options
Two-factor authentication requires users to commit to storing a secret code indefinitely. Popular apps lack tools to back up and data transfer those secrets.
P2P apps’ connection amnesia makes them less fault-tolerant
Peer-to-peer apps forget the IP addresses it communicated with in the last session and rely on peer-discovery all the time. Caching can make them more robust.
Updated blog entries
Keep worthless ads off your website with AdSense Ad Balance
Update (): Google has stopped supporting the ad balance option. They’ve not published any details explaining the change. The article is left unchanged for those interested in how this featured worked historically.
Navigate around dead links with the Wayback Machine browser extension
Update (): The Wayback Machine extension is no longer available in the Google Chrome Store. There are other extensions available with similar functionality.
WebP image file sizes compared to equivalent Guetzli and Zopfli
Update (): Apple has now also added WebP support to Safari as of version 14.
WebP images won’t load in Microsoft Edge with Application Guard
Update (): Apple has finally added WebP support to Safari 14.