Patrick Recher patte

# create
dd if=/dev/zero of=/tmp/sparse_file bs=1 count=0 seek=512M
sudo losetup /dev/loop10 /tmp/sparse_file
sudo zpool create test /dev/loop10
sudo zpool status test

# write
sudo zfs create test/fs
sudo dd if=/dev/urandom of=/test/fs/bigfile bs=1M count=400 status=progress

sudo apt install --no-install-recommends msmtp msmtp-mta bsd-mailx

sudo touch /var/log/msmtp
sudo chown root:users /var/log/msmtp
sudo chmod 664 /var/log/msmtp

echo 'set mta=/usr/bin/msmtp' | sudo tee -a /etc/mail.rc

sudo vi /etc/msmtprc

Logitech G502 X

https://www.logitechg.com/en-us/products/gaming-mice/g502-x-wired-lightforce.910-006136.html

/sys/class/hidraw/hidraw2/device/uevent

DRIVER=hid-generic
HID_ID=0003:0000046D:0000C099

exclude one address from Wireguard AllowedIPs

The following python script calculates the network addresses in CIDR notation (ready to be set in the config to AllowedIPs =) to route all traffic (0.0.0.0/0) except for one address (30.31.32.33/32) through the wireguard interface. This is usefull if you run wireguard over another tunnel (e.g. udp2raw).

$ python3

import ipaddress
n1 = ipaddress.ip_network('0.0.0.0/0')
n2 = ipaddress.ip_network('30.31.32.33/32')
l = list(n1.address_exclude(n2))

	#!/usr/bin/env bash

	## move away CR2 and AAE files
	cd /data/
	SRC="./Fotos-Mediathek.photoslibrary/Masters/"
	DEST="./additional-files/Masters/"
	sudo mkdir -p "$DEST"

	sudo rsync -av \
	--remove-source-files \

	# fix for:
	# perl: warning: Setting locale failed.
	# perl: warning: Please check that your locale settings:
	# LANGUAGE = (unset),
	# LC_ALL = (unset),
	# LC_CTYPE = "UTF-8",
	# LANG = "C.UTF-8"
	# are supported and installed on your system.
	# perl: warning: Falling back to a fallback locale ("C.UTF-8").

	/**
	* Asserts that the provided Uint8Array is backed by an ArrayBuffer.
	*
	* Throws an error if the buffer is a SharedArrayBuffer or any other type.
	* This is useful for ensuring (type) compatibility with APIs that require Uint8Array<ArrayBuffer>.
	* Usage:
	* // bytes: Uint8Array<ArrayBufferLike>
	* assertArrayBuffer(bytes);
	* // bytes: Uint8Array<ArrayBuffer>
	*

	# /etc/systemd/system/led.service
	[Unit]
	Description=Turn off boot button LED
	After=multi-user.target

	[Service]
	Type=oneshot
	ExecStart=/bin/bash -c "echo 0 > /sys/class/leds/chromeos:white:power/brightness"
	RemainAfterExit=true
	User=root

	package main

	import (
	"io"
	"log"
	"net/http"
	"net/http/httputil"
	"net/url"
	)

	var topojsonClient = require("topojson-client")

	ch = await fetch("https://swiss-maps.vercel.app/api/v0?format=topojson&projection=wgs84&year=2022&shapes=lakes").then(res => res.json())

	geo = topojsonClient.feature(ch, ch.objects.lakes)

	console.log(JSON.stringify(geo, null, 2))