jkraemer / presence_light_blueprint.yaml

Created July 23, 2025 16:58 — forked from adamjez/presence_light_blueprint.yaml

Home Assistant blueprint for Presence Activated Light automation

	blueprint:
	name: Presence Light
	description: Turn on a light when presence is detected.
	domain: automation
	input:
	presence_entity:
	name: Presence Sensor
	description: Presence sensor device
	selector:
	entity:

jkraemer / hillshade-transparent-overlay.md

Created October 4, 2018 03:16 — forked from cquest/hillshade-transparent-overlay.md

transparent hillshade cooking guide using gdal

Ingredients

a decent DEM
gdal
some computer

compute grayscale hillshade using gdaldem

gdaldem hillshade -compute_edges your_dem_file hillshade.tif

color-ramp to compute transparency (alpha channel)

In another bowl, prepare the following shade.ramp file:

jkraemer / pg_trgm.rake

Created August 1, 2018 03:07

Rake task to create Trigram indizes for a Redmine database (PostgreSQL only)

	class CreatePostgresqlTrgmIndex
	def self.call(model, column, concurrently: true)
	table = model.table_name
	column = column.sub(/.*\./, "")
	puts sql = "CREATE INDEX #{"CONCURRENTLY" if concurrently} index_#{table}_on_#{column}_trgm ON #{table} USING gin (#{column} gin_trgm_ops)"
	model.connection.execute sql
	rescue ActiveRecord::StatementInvalid
	raise $! unless $!.message =~ /PG::Duplicate/
	end
	end

jkraemer / cli.ini

Last active September 14, 2020 12:39

Let's Encrypt certificate renewal with HAProxy

	# Use a 4096 bit RSA key instead of 2048
	rsa-key-size = 4096

	# update to register with the specified e-mail address
	email = [email protected]

	# use a text interface instead of ncurses
	text = True
	non-interactive = True
	agree-tos = True

jkraemer / bm.rb

Last active July 5, 2016 11:26

logging and string interpolation


	require 'benchmark'
	require 'logger'

	iterations = 1000000

	logger = Logger.new(STDOUT)

jkraemer / devise_invitable.de.yml

Last active June 9, 2022 11:50

	de:
	devise:
	failure:
	invited: "Du hast bereits eine Einladung erhalten. Nimm die Einladung an um dein Nutzerkonto zu erstellen."
	invitations:
	send_instructions: "Eine Einladung wurde an %{email} verschickt."

jkraemer / keybase.md

Created April 21, 2015 00:43

Keybase proof

I hereby claim:

I am jkraemer on github.
I am jkraemer (https://keybase.io/jkraemer) on keybase.
I have a public key whose fingerprint is C388 0ACE 6187 419B 177C 472E 0862 5A14 CE3C DDAA

To claim this, I am signing this object:

jkraemer / gist:5995430

Created July 14, 2013 19:15

Linux on Lenovo X230 field notes

	/etc/rc.local
	# reduce swapping to a minimum
	echo 0 > /proc/sys/vm/swappiness

	/etc/fstab
	use "noatime,nodiratime,discard" mount options for SSD
	use tmpfs for tmp and friends:

	tmpfs /tmp tmpfs defaults,noatime,mode=1777 0 0
	tmpfs /var/spool tmpfs defaults,noatime,mode=1777 0 0

jkraemer / gist:5990285

Created July 13, 2013 10:33

Install Skype on 64bit Debian Wheezy / Crunchbang 11

	sudo dpkg --add-architecture i386
	sudo aptitude install libxv1:i386 libxss1:i386 libasound2:i386 libqt4-dbus:i386 libqtwebkit4:i386 libasound2-plugins:i386 libssl1.0.0:i386

	sudo dpkg -i skype-debian_4.2.0.11-1_i386.deb

jkraemer / Berksfile

Created April 19, 2013 08:11

Vagrant 1.2.1 / berkshelf-vagrant 1.1.3

	site :opscode

	cookbook 'apt'

Jens Krämer jkraemer

Ingredients

compute grayscale hillshade using gdaldem

color-ramp to compute transparency (alpha channel)

Keybase proof