[ Edit: fixed by adding UID, GID, and PEER env vars to the wireguard service: https://github.com/ngoduykhanh/wireguard-ui/issues/473#issuecomment-1793604986 ] Following a guide to set-up wireguard and wireguard-ui: https://linuxiac.com/how-to-set-up-wireguard-vpn-with-docker/ Server created on DigitalOcean with IPv4 and IPv6 addresses by default. Configured iptables as per the set-up guide (server also runs another docker based service that opens ports 80, 433, and 9993): sysops@master-control:~/wireguard$ sudo iptables -L Chain INPUT (policy ACCEPT) target prot opt source destination Chain FORWARD (policy DROP) target prot opt source destination DOCKER-USER all -- anywhere anywhere DOCKER-ISOLATION-STAGE-1 all -- anywhere anywhere ACCEPT all -- anywhere anywhere ctstate RELATED,ESTABLISHED DOCKER all -- anywhere anywhere ACCEPT all -- anywhere anywhere ACCEPT all -- anywhere anywhere ACCEPT all -- anywhere anywhere ctstate RELATED,ESTABLISHED DOCKER all -- anywhere anywhere ACCEPT all -- anywhere anywhere ACCEPT all -- anywhere anywhere ACCEPT all -- anywhere anywhere ctstate RELATED,ESTABLISHED DOCKER all -- anywhere anywhere ACCEPT all -- anywhere anywhere ACCEPT all -- anywhere anywhere ACCEPT all -- anywhere anywhere Chain OUTPUT (policy ACCEPT) target prot opt source destination Chain DOCKER (3 references) target prot opt source destination ACCEPT udp -- anywhere 172.

Quick and dirty post that pulls together a couple of sources. I might improve the post at some point. I might not… Initial set-up: Source https://www.youtube.com/watch?v=TsuY4o2zLVQ Additional code to specify which video device to create. sudo apt update && sudo apt install gphoto2 v4l2loopback-utils ffmpeg echo 'dslr-webcam' | sudo tee -a /etc/modules echo <<EOT | sudo tee -a /etc/modprobe.d/dslr-webcam.conf alias dslr-webcam v4l2loopback options v4l2loopback exclusive_caps=1 max_buffers=2 video_nr=69 EOT Hardware acceleration set-up:

If you get this (or similar) when trying to insert/update in a MySQL database, you table is not able to cope with the extended version of the UTF8 character set. You will need to convert your table to use the utf8mb4 character set, and utf8mb4_unicode_ci collation. An example to do so: ALTER TABLE `your_table_here` CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

Running Kubuntu on my 2018 DELL XPS 15 laptop is a joy, when I can reduce the brightness down to its minimum. During daylight hours, the minimum is bright enough and saves on battery usage. But during the evening, when I’m tired from staring at monitors all day long, I found that my eyes were begging me to stop using the laptop. Using the brightness controls on the laptop’s keyboard causes the brightness to step up and down by distinct levels.

New laptop provided by work. Time to install everything that makes me productive as a PHP developer. Using Kubuntu 21.10 as my base OS. General utilities: sudo apt install \ openssh-server \ net-tools \ htop \ curl \ whois \ ack \ mysql-client \ httpie \ php-cli \ freerdp2-x11 \ meld \ kcachegrind \ vokoscreen-ng \ autokey-qt \ parlatype \ thunderbird-locale-en-gb \ libreoffice-calc \ libreoffice-writer \ libreoffice-draw \ cherrytree Snaps:

I’m late to the mydumper party - https://github.com/maxbube/mydumper Multi-threaded, lightning quick, exports to files per table structure and data. In the Ubuntu world (and likely Debian too) it’s available as a precompiled package: sudo apt update && sudo apt install mydumper Backup everything in a database: mydumper \ --triggers \ --routines \ --events \ --database name_of_source_database It’ll create a date stamped directory with two files for each table. One for the schema, the other with the data.

Wrap the variable (that holds the class name) in brackets: <?php class A { public static function foo($arg) { return 'Argument was "' . $arg . '"' . PHP_EOL; } } $result = A::foo('triggered via named class'); echo $result; $className = A::class; $result = ($className)::foo('trigged via variable'); echo $result; The output of the above code: $ php a.php Argument was "triggered via named class" Argument was "trigged via variable"

Silly thing to happen really. Some system on the instance detected too many connections in a short amount of time - likely due to some automated tasks driven by ansible. That resulted in iptables dropping all connections to port 22 🙁 Thankfully, with google compute, one can access the serial console via the web UI. Unfortunately, all of my users have no passwords - this is to ensure that ssh logins are via keypairs only.

TLDR; Install gnome-keyring If you are not using the default install of Ubuntu, you might not be using Gnome. This is the case for flavours such as: Kubuntu (KDE Plsama), Lubuntu (LXQt), Xubuntu (XFCE), and so on. And if you have installed Skype using snap, then you will likely find that it will always ask you to login upon loading, even if you have it configured to automatically run at login.

With each new release of Ubuntu, I’ve stuck with the default desktop environment. These have worked well for me over the years, but thought I should see what else there is. The only way for me to do it justice is to run KDE Plasma as my only desktop environment for a minimum of 2 weeks. So both my work station and my personal laptop are use KDE Plasma installed alongside Gnome 3 Shell on Ubuntu 19.