Skip to content

Instantly share code, notes, and snippets.

View mikehale's full-sized avatar

Michael Hale mikehale

49 followers · 16 following
  • Heroku
  • Holly Springs, NC
View GitHub Profile
@mikehale
mikehale / application.rb
Last active August 5, 2024 21:29
Support rails master key rotation. Tries an array of keys from named environment variables.
config.before_initialize do |app|
class CompositeEncryptedConfiguration
def initialize(config:, env_keys:)
configs = env_keys.map do |key|
ActiveSupport::EncryptedConfiguration.new(
config_path: Rails.root.join(config.credentials.content_path),
key_path: Rails.root.join(config.credentials.key_path),
env_key: key,
raise_if_missing_key: true
)
@mikehale
mikehale / backup.rb
Last active September 3, 2019 14:28
# To install this script as a context menu item, add this to the registry:
# key: \HKEY_CLASSES_ROOT\*\shell\Backup\command
# default data: C:\Ruby26-x64\bin\rubyw.exe C:\Scripts\backup.rb "%1"
# And place this file at C:\Scripts\backup.rb
require 'fileutils'
require 'time'
src = ARGV.first
exit unless src
@mikehale
mikehale / csv-to-values.rb
Created September 21, 2018 21:34
#!/usr/bin/env ruby
# Read CSV data from STDIN, output a WITH clause containing the CSV data
require 'csv'
csv = CSV.parse($stdin, headers: true, converters: :numeric, header_converters: :symbol)
columns = csv.headers.join(",")
cte_name = ENV.fetch("CTE_NAME", 'temp')
@mikehale
mikehale / 1_README.md
Last active January 24, 2018 20:30
Share file descriptors between processes on the same machine using unix domain sockets. Thanks to https://www.linuxquestions.org/questions/programming-9/how-to-share-socket-between-processes-289978/ for the inspiration.

Usage:

Open 2 terminals, run server.rb in one and client.rb in the other. The tcp socket file descriptor will be created in the client, passed to the server, and then used in the server to read from the HTTP server.

@mikehale
mikehale / install-binary-on-heroku
Created May 19, 2017 17:32
curl -L https://github.com/rlmcpherson/s3gof3r/releases/download/v0.5.0/gof3r_0.5.0_linux_amd64.tar.gz | tar -zxv --strip-components 1 -C /app/bin
@mikehale
mikehale / gist:3699b64a007834200c4d7823d3ad069c
Created August 19, 2016 03:47
#!/bin/sh
set -x
# http://lartc.org/howto/lartc.qdisc.classful.html
# A single user has 5000kbit upload for himself. But they want prioritizing.
# Variables
TC=$(which tc)
IPT=$(which iptables)
@mikehale
mikehale / script to run psql from url in env
Created July 26, 2016 16:05
`ruby -ruri -e 'uri = URI.parse(ENV["DATABASE_URL"]); puts %(env PGPASSWORD=#{uri.password} psql --dbname=#{uri.path[1..-1]} --host=#{uri.host} --port=#{uri.port} --username=#{uri.user} --no-password)'`
@mikehale
mikehale / gist:60d8b146d967276640ab
Created July 31, 2015 20:46
foo
@mikehale
mikehale / gist:7a66ba17ba9f074046d9
Last active August 29, 2015 14:22
restore old syncthing versions
# Specific dir
cd ~/Sync/.stversions
cp foo ~/Sync/foo
cd ~/Sync/foo
find . -name '*~20150604*' -type f |ruby -rfileutils -e 'mappings = STDIN.read.split($/).map{|s| s =~ /^(.+)~\d{8}-\d{6}(.*)/; d = [$1, $2].join; [s,d]}; mappings.each{|s,d| FileUtils.mv(s,d, noop: false, verbose: true)}'
# Scan for version files
cd ~/Sync
find . ! -path './.stversions/*' -name '*~20150604*' -type f
@mikehale
mikehale / display-drives
Created June 4, 2015 06:00
#!/usr/bin/env ruby
# Shows the physical location of each disk
DEVICE_NAME = "sata_sil24"
FORMAT = {
:scsi_id => 0..12,
:media => 13..20,
:bus => 21..29,
:model => 30..46,