Luacheck list of warnings
luacheck.readthedocs.io
I have Luacheck configured with coc.nvim, and started paying attention to warnings it is emitting. In some cases, I've realized that while the warning is valid, I might need to ignore it. You can do this by adding a comment of the form -- luacheck: ignore {pattern}
. The pattern is most succinct when you can use the Luacheck warning code... and this link lists all of them.
Changing port maps in Docker Compose
akrabat.com
Rob details how to override and remove values in a Docker compose file when using a compose.override.yml
or extending a value/service.
To just override it:
- ports: !override
- "8081:80"
This is necessary, as otherwise if the value is already present in the original, the two settings get merged.
To remove:
- ports: !reset []
Magento Cron via systemd timers | bitExpert
blog.bitexpert.de
Debian and Ubuntu are no longer shipping cron by default, and instead recommending setting up systemd timers. Stephan details how this is done, which requires both a systemd service file, and a systemd timer file.
The service file looks like this:
### Goes into /etc/systemd/system as a file with a .service extension
[Unit]
Description=Description of the service here
Wants=service-name.timer
[Service]
Type=oneshot
ExecStart=/path/to/executable/to/run/here
User=user-to-run-as
Group=group-to-run-as
[Install]
WantedBy=multi-user.target
You then create a timer, which is a systemd service defining a Timer section with an interval specified:
### Goes into /etc/systemd/system as a file with a .timer extension
[Unit]
Description=Executes every minute
Requires=service-name.service
[Timer]
Unit=service-name.service
OnCalendar=minutely
[Install]
WatnedBy=multi-user.target
The OnCalendar
property can use "natural language" shortcuts like "minutely" or "hourly", or you can define date/time-based interval such as *-*-* *:*:00
.
Once done, you need to start the service and enable the timer (usually as root):
systemctl start service-name.service
systemctl enable service-name.timer
and trigger it manually any time using:
systemctl start service-name.service
Prevent the Docker container from taking 10 seconds to stop
akrabat.com
Rob Allen details how the exec form of a Docker CMD is the better form to use. The reason the string form invokes bash first, and thus bash gets PID 1, which is what Docker will terminate when the container is terminated. The problem is that bash doesn't then send a termination signal to the actual process invoked, forcing the Docker host to wait 10 seconds before force killing all processes in the container.
Chesterton’s Fence: A Lesson in Thinking
fs.blog
There is an adage attributed to G.K. Chesterton called "Chesterton's Fence" that can be abbreviated to this:
Do not remove a fence until you know why it was up in the first place.
I've read this article after a number of recent articles decrying the idea of "Founder's Mode" and other crappy entrepreneurial beliefs, and it struck a note with me. So many "disruptors" do not stop to understand why things operate as they currently do: what does having a taxi license solve for the community? what do environmental regulations solve for ecosystems? what additional regulations do hotels and other commercial lodgings need to abide by to protect consumers and employees? etc.
Where Are Harris’s Policies? Trapped in the Supreme Court
newrepublic.com
A number of legal and political scholars are noting that the reversal of the Chevron deference has essentially made the US Supreme Court a super-legislative body, and will hamper any legislative advances Democrats might make, even in the case where they control the executive and legislative branches.
gron
github.com
gron
is a tool for working with JSON. It chunks things into key-value pairs where the key is a dot-separated hierarchy. This allows you then to use grep
or ack
to search for strings of interest.
It can also reassemble these back into JSON. This can be useful for adding or removing portions of a JSON structure. It becomes really interesting then when you pair it with jq
in order to retrieve data back out.
As an example, I can get the list of development requirements from a composer.json
with the following:
gron composer.json | ack "require-dev" | gron -u | jq '."require-dev" | keys[]'
(They'll still be in quotes, but that's easier to deal with than JSON keys!)
Wezterm Quick Select Mode
wezfurlong.org
Quick select mode in Wezterm allows you to identify patterns in the current visible screen; Wezterm then highlights each and provides a key to each allowing you to copy and/or paste the associated value. Activate it with Ctrl-Shift-Space
.
As examples:
- It matches sha1 and md5 values. Use these to match a git ref in a log so you can then inspect it.
- It matches Docker container identifiers; use these to match a container identifier so you can run a command in it or copy a file from or to it.
- It matches URLs; use it to identify a URL to pass to HTTPie.
- It matches paths; use it to match a path to perform a file operation on.
Use your own user @ domain for Mastodon discoverability with the WebFinger Protocol
www.hanselman.com
This was the article I used to allow using @matthew@mwop.net
as my public fediverse account. Webfinger aliases it to the actual account I use, but this allows me to have a single, public address I provide, and gives me the option of future portability.
Finding Terminal Utopia
www.daveyshafik.com
Davey does a stellar job here of detailing a number of different tools he uses to cobble together an optimal terminal experience for himself. I personally found starship, eza, and fd to be great finds, and have incorporated them in my own terminal setup.
Library - A short story by Ben Brown
benbrown.com
Great short story detailing a library... but it's not what you think...