joshes / springer-free-maths-books.md

Created December 29, 2015 00:22 — forked from bishboria/springer-free-maths-books.md

Springer have made a bunch of maths books available for free, here are the direct links

Direct links to free Springer maths books (pdf versions)

duplicates = multiple editions

joshes / distance.sql

Created March 21, 2017 20:53 — forked from aramonc/distance.sql

MySQL function to calculate the distance between two coordinates using the Haversine formula. Leaving it here for future reference.

	DELIMITER $$
	CREATE FUNCTION `haversine` (lat1 DECIMAL(8,6), lng1 DECIMAL(8,6), lat2 DECIMAL(8,6), lng2 DECIMAL(8,6)) RETURNS DECIMAL(8,6)
	BEGIN
	DECLARE R INT;
	DECLARE dLat DECIMAL(30,15);
	DECLARE dLng DECIMAL(30,15);
	DECLARE a1 DECIMAL(30,15);
	DECLARE a2 DECIMAL(30,15);
	DECLARE a DECIMAL(30,15);
	DECLARE c DECIMAL(30,15);

joshes / command.yaml

Created March 27, 2018 22:11

Command to make container wait

command: ['/bin/bash', '-c', 'trap : TERM INT; sleep infinity & wait']

joshes / download-alexa-audio.sh

Created January 19, 2019 17:51

Downloads all of your Amazon Alexa audio files to disk

	# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
	#
	# Downloads all of your alexa audio files to `output_dir` with the filenames
	# flattened (vs storing as sub-directories as implied by the file name).
	#
	# For example, the following id:
	# - A3S5CH1HU6KAYF:1.0/2019/01/18/17/G090LF1174270LM2/39:31::TNIH_2V.6c04473c-3160-4012-9719-63ca63396288ZXK
	# Will be saved to:
	# - ${output_dir}/A3S5CH1HU6KAYF_1_0_2019_01_18_17_G090LF1174270LM2_39_31__TNIH_2V_6c04473c-3160-4012-9719-63ca63396288ZXK.wav
	#

joshes / etcdctl-with-tls.sh

Created July 2, 2019 21:16

	# Example of using etcdctl w/TLS

	kubectl exec -it -n kube-system $(kubectl get pods -n kube-system \| grep etcd-manager-main \| awk '{print $1}') bash

	CLUSTER=my-cluster.k8s.local

	cd /opt/etcd-v3.2.18-linux-amd64
	ETCDCTL_API=3 ./etcdctl \
	--key /rootfs/etc/kubernetes/pki/kube-apiserver/etcd-client.key \
	--cert /rootfs/etc/kubernetes/pki/kube-apiserver/etcd-client.crt \

joshes / nodeup

Created July 14, 2019 05:02

sudo SKIP_PACKAGE_UPDATE=1 /var/cache/kubernetes-install/nodeup --conf=/var/cache/kubernetes-install/kube_env.yaml --v=10

joshes / gitlab-runner-cleanup

Last active July 14, 2019 15:42

	# Show stats
	sudo du -d1 -h /var/lib/docker \| sort -h

	# Cleanup images
	sudo docker rmi $(sudo docker images --filter "dangling=true" -q --no-trunc)

	# Cleanup volumes
	sudo docker ps -a \| awk 'NR>1 {print $1}' \| xargs sudo docker rm
	sudo docker volume rm $(sudo docker volume ls -qf dangling=true)

joshes / aws cli cheatsheet.md

Last active August 15, 2019 16:13 — forked from apolloclark/aws cli cheatsheet.md

AWS CLI Cheatsheet

joshes / gist:0a7c05c5b600347575e0422641c9d3bc

Last active August 18, 2019 17:52 — forked from amccarty/gist:efb8b8cfd2a42363cf060ff7778a10f9

Elastic Beanstalk memory monitor cron

	# https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/mon-scripts.html
	#.ebextensions/01-memorymon.config

	packages:
	yum:
	perl-Switch: []
	perl-DateTime: []
	perl-Sys-Syslog: []
	perl-LWP-Protocol-https: []
	perl-Digest-SHA.x86_64: []

joshes / samizdat-shell-help.bash

Created July 7, 2020 21:37 — forked from kovetskiy/samizdat-shell-help.bash

	#!/bin/bash
	###
	### my-script — does one thing well
	###
	### Usage:
	### my-script <input> <output>
	###
	### Options:
	### <input> Input file to read.
	### <output> Output file to write. Use '-' for stdout.