jsjohnst’s gists

jsjohnst / totp.sh

Created October 18, 2022 22:26

read -r -p 'Secret Key: ' secret_key; dgst=$(printf '%016X' $(($(date -u '+%s') / ${TOTP_PERIOD_SECONDS:=30})) | xxd -r -p | openssl dgst -sha1 -mac hmac -macopt "hexkey:$(printf $secret_key | tr '[:lower:]' '[:upper:]' | base32 -d | xxd -p)"); offset=$(( 2 * 16#${dgst: -1} )); token=$(( ( 16#${dgst:offset:8} & 0x7fffffff ) % 10**${TOTP_DIGITS:=6} )); printf "%0${TOTP_DIGITS}d\n" "$token"

jsjohnst / fix-docker-mac-tcp-idle-timeout.sh

Created June 12, 2020 16:20

Docker for Mac has a default TCP idle timeout of 300 seconds. This script helps disable/restore that as needed

	#!/usr/bin/env bash

	opmode=$1

	if [[ "x$opmode" == "x" ]]; then
	echo "Usage:"
	echo " ${0} <opmode>"
	echo "Where <opmode> is either 'patch' or 'revert'"
	exit 0;
	fi

jsjohnst / FestiveChristmasTree.wl

Created December 26, 2019 03:14

Code by Silvia Hao from here: https://community.wolfram.com/groups/-/m/t/175891

	PD = .5;
	s[t_, f_] := t^.6 - f
	dt[cl_, ps_, sg_, hf_, dp_, f_, flag_] :=
	Module[{sv, basePt},
	{PointSize[ps],
	sv = s[t, f];
	Hue[cl (1 + Sin[.02 t])/2, 1, .3 + sg .3 Sin[hf sv]],
	basePt = {-sg s[t, f] Sin[sv], -sg s[t, f] Cos[sv], dp + sv};
	Point[basePt],
	If[flag,

jsjohnst / Makefile

Created September 17, 2018 15:32

Have you ever needed to create SAN self-signed certificates before? This will help make the process easier. Duplicate line 18 and increment the counter for each additional `alt_name` you need in the cert.

	all: internal-ssl.key internal-ssl.pem

	internal-ssl.pem: internal-ssl.conf
	openssl req -x509 -nodes -days 3650 -newkey rsa:2048 -keyout internal-ssl.pem -out internal-ssl.pem -config internal-ssl.conf -extensions 'v3_req'

	internal-ssl.key: internal-ssl.conf
	openssl req -x509 -nodes -days 3650 -newkey rsa:2048 -keyout internal-ssl.key -out internal-ssl.crt -config internal-ssl.conf -extensions 'v3_req'

jsjohnst / key base.md

Created August 30, 2017 19:54

Keybase proof

I hereby claim:

I am jsjohnst on github.
I am jsjohnst (https://keybase.io/jsjohnst) on keybase.
I have a public key ASBBhxKVheZIDl7uTgJleEIrPk1SaJy3mjI6f26RuHaIVQo

To claim this, I am signing this object:

jsjohnst / 2016_election.py

Last active November 12, 2016 04:36

	import urllib
	import json
	import locale

	locale.setlocale(locale.LC_ALL, 'en_US')

	state = "UT"

	states = ['AK', 'AL', 'AR', 'AZ', 'CA', 'CO', 'CT', 'DC', 'DE', 'FL', 'GA', 'HI', 'IA', 'ID', 'IL', 'IN', 'KS',
	'KY', 'LA', 'MA', 'MD', 'ME', 'MI', 'MN', 'MO', 'MS', 'MT', 'NC', 'ND', 'NE', 'NH', 'NJ', 'NM', 'NV',

jsjohnst / EmailEveryone.applescript

Created August 9, 2016 17:59

Send emails to everyone in your address book

	set senderName to "Sender Name"
	set senderEmail to "[email protected]"

	on trim(txt)
	repeat with i from 1 to (count txt) - 1
	if (txt begins with space) then
	set txt to text 2 thru -1 of txt
	else
	exit repeat
	end if

jsjohnst / mongo_disk_usage.js

Last active November 21, 2020 05:48

Calculate total disk usage by MongoDB. storageSize is the actual used space, totalSize is the amount of disk space allocated.

	db = db.getSiblingDB("admin");
	dbs = db.runCommand({ "listDatabases": 1 }).databases;

	storageSize = 0;
	totalSize = 0;

	dbs.forEach(function(database) {
	db = db.getSiblingDB(database.name);
	stats = db.stats();

jsjohnst / gist:ced4d1d7cae593771dee

Last active October 19, 2015 22:34

	1. Install: http://xquartz.macosforge.org/downloads/SL/XQuartz-2.7.8.dmg
	2. Then launch XQuartz and open the preferences. On the output tab, click "Full-screen mode"
	3. Follow instructions below to install and setup xmonad

	$ brew install Caskroom/cask/haskell-platform
	$ vim ~/.bash_profile
	export PATH="$HOME/Library/Haskell/bin:$PATH"
	$ PKG_CONFIG_PATH=/opt/X11/lib/pkgconfig:$PKG_CONFIG_PATH \
	LIBRARY_PATH=/opt/X11/lib:$LIBRARY_PATH \
	CPPFLAGS="-I/opt/X11/include" \

jsjohnst / aws_iam_policy.json

Last active August 26, 2015 19:00 — forked from kixorz/aws_iam_policy.json

Update Route53 DNS records from your EC2 instance using this simple Ruby script. You can call it from rc.local after setting your hostname locally. First parameter is the desired <hostname>.<domain> Domain and other parameters are hardcoded. This script is useful for handling internal DNS changes in your systems after instance changes. Attached …

	{
	"Statement": [
	{
	"Action": [
	"route53:ChangeResourceRecordSets",
	"route53:GetHostedZone",
	"route53:ListResourceRecordSets"
	],
	"Effect": "Allow",
	"Resource": [

Jeremy Johnstone jsjohnst

Keybase proof