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Richard Metzler rmetzler

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@cure53
cure53 / 1266386.md
Last active May 30, 2020 17:55
OTF+SVG allows to read info character by character with only a STYLE injection through XEE & timing

OTF+SVG allows to read info character by character with only a STYLE injection through XEE & timing

Intro

Mozilla Firefox supports a feature that allows to define SVG images inside an OTF font to represent characters. This is useful if we for example want to work with colorful characters, Emoji, animated characters and so on. Firefox is currently the only relevant browser supporting this technology.

The general technology and its advantages are described here:

@olih
olih / jq-cheetsheet.md
Last active June 25, 2026 07:27
jq Cheet Sheet

Processing JSON using jq

jq is useful to slice, filter, map and transform structured json data.

Installing jq

On Mac OS

brew install jq

The issue:

..mobile browsers will wait approximately 300ms from the time that you tap the button to fire the click event. The reason for this is that the browser is waiting to see if you are actually performing a double tap.

(from a new defunct https://developers.google.com/mobile/articles/fast_buttons article)

touch-action CSS property can be used to disable this behaviour.

touch-action: manipulation The user agent may consider touches that begin on the element only for the purposes of scrolling and continuous zooming. Any additional behaviors supported by auto are out of scope for this specification.

@toast38coza
toast38coza / github_repo.py
Created February 9, 2016 18:05
An Ansible module for managing github repos
#!/usr/bin/python
DOCUMENTATION = '''
---
module: github_repo
short_description: Manage your repos on Github
'''
EXAMPLES = '''
- name: Create a github Repo
@carlessanagustin
carlessanagustin / Nginx_Cheat_Sheet.md
Last active December 18, 2025 19:19
Nginx Cheat Sheet
@voltuer
voltuer / vimdiff.md
Last active October 10, 2020 05:40
vimdiff colors

~/vim/colors/miscolores.vim

highlight DiffAdd    cterm=bold ctermfg=10 ctermbg=17 gui=none guifg=bg guibg=Red
highlight DiffDelete cterm=bold ctermfg=10 ctermbg=17 gui=none guifg=bg guibg=Red
highlight DiffChange cterm=bold ctermfg=10 ctermbg=17 gui=none guifg=bg guibg=Red
highlight DiffText   cterm=bold ctermfg=10 ctermbg=88 gui=none guifg=bg guibg=Red

~/.vimrc

@rmetzler
rmetzler / dht11_oled.ino
Created January 16, 2016 22:21
Arduino, DHT11 and OLED display
#include <SPI.h>
#include <Wire.h>
#include <DHT.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
#define OLED_RESET 4 // not used / nicht genutzt bei diesem Display
Adafruit_SSD1306 display(OLED_RESET);
@drmalex07
drmalex07 / README-setup-tunnel-as-systemd-service.md
Last active July 15, 2026 18:57
Setup a secure (SSH) tunnel as a systemd service. #systemd #ssh #ssh-tunnel #ssh-forward

README

Create a template service file at /etc/systemd/system/secure-tunnel@.service. The template parameter will correspond to the name of target host:

[Unit]
Description=Setup a secure tunnel to %I
After=network.target
@joepie91
joepie91 / vpn.md
Last active July 17, 2026 00:49
Don't use VPN services.

Don't use VPN services.

No, seriously, don't. You're probably reading this because you've asked what VPN service to use, and this is the answer.

Note: The content in this post does not apply to using VPN for their intended purpose; that is, as a virtual private (internal) network. It only applies to using it as a glorified proxy, which is what every third-party "VPN provider" does.

  • A Russian translation of this article can be found here, contributed by Timur Demin.
  • A Turkish translation can be found here, contributed by agyild.
  • There's also this article about VPN services, which is honestly better written (and has more cat pictures!) than my article.
@hfreire
hfreire / qemu_osx_rpi_raspbian_jessie.sh
Last active December 4, 2025 03:23
How to emulate a Raspberry Pi (Raspbian Jessie) on Mac OSX (El Capitan)
# Install QEMU OSX port with ARM support
sudo port install qemu +target_arm
export QEMU=$(which qemu-system-arm)
# Dowload kernel and export location
curl -OL \
https://github.com/dhruvvyas90/qemu-rpi-kernel/blob/master/kernel-qemu-4.1.7-jessie
export RPI_KERNEL=./kernel-qemu-4.1.7-jessie
# Download filesystem and export location