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#!/usr/bin/env python
# -*- charset utf8 -*-

import pyaudio
import numpy
import math
import matplotlib.pyplot as plt
import matplotlib.animation

RATE = 44100

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chroot Environments on macOS

This is a draft.

macOS doesn’t have many of the advanced Linux or UNIX features that have come about in the past 20 years. So getting a proper chroot environment up and running takes a little more work.

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// How to:
// 1) Login into https://icloud.com
// 2) Open the developer tools and execute this code in the console
// See more @ https://medium.com/bugbountywriteup/how-apple-stored-all-your-email-metadata-for-years-on-their-servers-2a61b1a3232d
const _API_URL='https://p18-mailws.icloud.com/wm/recents';
const _requestContacts = () => {
        console.warn('Requesting your contacts...');
        return fetch(_API_URL, {
                method: 'POST',
                headers: {

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#!/usr/bin/env bash

# ~/.osx — http://mths.be/osx

# Ask for the administrator password upfront
sudo -v

# Keep-alive: update existing `sudo` time stamp until `.osx` has finished
while true; do sudo -n true; sleep 60; kill -0 "$$" || exit; done 2>/dev/null &

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The repository for the assignment is public and Github does not allow the creation of private forks for public repositories.

The correct way of creating a private frok by duplicating the repo is documented here.

For this assignment the commands are:

1. Create a bare clone of the repository. (This is temporary and will be removed so just do it wherever.)

git clone --bare git@github.com:usi-systems/easytrace.git

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c46ca3523b5a6da56bb25cd982c58b95_cmd() {
  echo "[INFO] $@" ; sh -c "$@"
}

brew_install_or_upgrade() {
  # shellcheck disable=SC2206
  local tools=($@)
  # shellcheck disable=SC2155
  local -a installed
  echo [INFO] checking installed...