pch

Encrypted Tokens Between Rails and Node

If you need to pass data safely between Rails and Node, you can use the built-in Rails encryption.

The script below wraps ActiveSupport::MessageEncryptor, allowing to create expiring JSON tokens that can be decoded in Node using a shared secret.

secret = "866b914a169d3969849966febafe8057bec6b82ea477e64682a11a2e61096797"
payload = { user_id: 1, name: "John Doe", role: "admin" }
EncryptedToken.encode(payload: payload, expires_at: 10.minutes.from_now, secret: secret)

pch

How to Use macOS Finder as a MacVim File Drawer

When I switched to Vim from TextMate 2, the feature I missed the most was a decent file drawer (no, NERDTree doesn't cut it). I'm happy with [fzf.vim][fzf], but having the project tree in front of you can be really useful from time to time, e.g. when working with unfamiliar codebase, a new project etc.

The solution for it is surprisingly simple (although not without flaws): use MacVim with a Finder window in Split View mode:

pch

Keybase proof

I hereby claim:

• I am pch on github.
• I am pchm (https://keybase.io/pchm) on keybase.
• I have a public key ASDohLNPHrR-IY6_I7lzw1SiENKSNNIKkmT9-BQIpRQoxQo

To claim this, I am signing this object:

pch

How to install Unison on Mac OS El Capitan & Vagrant - for Docker Sync

You can install Unison on the Mac via homebrew (brew install unison), but it's very likely that it won't work properly, resulting in errors like:

Unison failed: Uncaught exception Failure("input_value: bad bigarray kind")
Fatal error: Lost connection with the server

pch

# rspec
group :test do
  gem 'rspec-rails'
  gem 'launchy'
  gem 'capybara'
  gem 'webrat'
  gem 'database_cleaner'
  gem 'email_spec'
  gem 'factory_girl_rails'
end

pch

#!/usr/bin/env ruby
#
# I use the following script to trick myself into writing every day.
#
# All it does is create a directory for the current month (YYYY/MM),
# create an empty markdown file for today and annoy the hell out of
# me until I put something in that file.
#
# I run the script with GeekTool every 30 minutes:
#   http://projects.tynsoe.org/en/geektool/

pch

  # Assertion for checking the number of queries executed within the &block
  def assert_queries(num = 1, &block)
    queries  = []
    callback = lambda { |name, start, finish, id, payload|
      queries << payload[:sql] if payload[:sql] =~ /^SELECT|UPDATE|INSERT/
    }

    ActiveSupport::Notifications.subscribed(callback, "sql.active_record", &block)
  ensure
    assert_equal num, queries.size, "#{queries.size} instead of #{num} queries were executed.#{queries.size == 0 ? '' : "\nQueries:\n#{queries.join("\n")}"}"

pch

#!/bin/sh

git_branch() {
  echo $(git symbolic-ref HEAD 2>/dev/null | awk -F/ {'print $NF'})
}

git_dirty() {
  st=$(git status 2>/dev/null | tail -n 1)
  if [[ $st == "" ]]
  then

pch

find . -not \( -name .git -prune -o -name images -prune -o -name GeoLiteCity.dat -prune \) -type f -print0 | xargs -0 perl -pi -e 's/ +$//'

pch

require 'net/http'
out = `arp-scan -lq`

macs =
out.split("\n").map do |line|
  if line =~ /([0-9A-F][0-9A-F :]{16})/i
    puts $1
    $1.split(' ').join(':').upcase
  end
end.compact.join(',')