Michael Winters mwinters0

Bash cheat sheet

Only the most common stuff

Script dir

# Doesn't work if "this file" is a symlink
SCRIPT_DIR=$( cd -- "$( dirname -- "${BASH_SOURCE[0]}" )" &> /dev/null && pwd )

WGU B.S. CompSci

https://www.wgu.edu/
- WGU is fully accredited
- B.S. Comp Sci is specifically ABET accredited, which is internationally recognized
Learn at your own pace, no speed limits.
- $4.5k/6-month term, no limit on credits achieved.
  - FAFSA eligible
- Many complete it within a single term
Admissions:
Requirements:

Mac python

Assumes zsh and homebrew

Pyenv (python versions)

Installing pyenv

brew install python3 pyenv
echo 'eval "$(pyenv init --path)"' >> ~/.zprofile
echo 'eval "$(pyenv init -)"' >> ~/.zshrc

Holding Effective Meetings

(Courtesy of bradrox.)

One of the things that interested me most about joining this team was the opportunity to work with a bunch of very competent people. Smart people, working hard can accomplish a tremendous amount more than any process and training can do. Thank you for this opportunity!

Smart people get bored easily. Meetings provide a perfect breeding ground for boredom. Once you’ve said what you need to say, it can be difficult to listen to everyone else who needs to say what they came to say. Smart, bored people have very clever ways of creating distractions that reduce the effectiveness of meetings. However, “effective listening” is one of the most important techniques to master if you want to shorten meetings…and thereby reduce boredom. Here are a few reminders that should improve the effectiveness of your next meeting. You can find many other resources available on the web.

Create a Kubernetes cluster at AWS with kops and terraform

This is how I do it. Considerations going into this approach are:

It puts all of your resources under terraform control, making it easy to reuse terraform code from other projects and/or use terraform for further integrations.
It permits a fair amount of flexibility in workstation configuration (no need to hardcode your workstation to match mine).
It provides a good setup for locally switching between multiple projects which might not all be running the same versions.

The examples here will assume that you are going to create a dev cluster for a fictional product named "Bigmoney". It is suggested to not use your product name in your cluster names, since product names are at the whim of marketing and other business tides. Instead, we will use a project codename of "ampersand" to signify "my team's clusters".

	[theme]
	name = "gruvbox-dark"
	parent = "default"

	[colors]
	# neutral_green
	AlertInfo = "#98971a"

	# neutral_orange
	AlertWarn = "#d65d0e"

	#!/bin/bash

	set -e

	# Upload a Sieve script via ManageSieve. Depends on `expect` and `openssl`.
	# Currently only tested with Stalwart.
	#
	# Usage 1:
	# SIEVE_FILENAME=foo.sieve \
	# SIEVE_HOSTNAME=mail.yay.wow \

	# Recursively searches a Python object (composed of both dicts and lists) to find all items with key name `key`
	def finditems(obj, key, results: list = None) -> list:
	if results is None:
	# this is the outermost function call, so init storage for all recursive calls
	results = []

	if isinstance(obj, dict):
	if key in obj:
	results.append(obj[key])
	# recurse through dict

	KUBE_TOKEN=$(</var/run/secrets/kubernetes.io/serviceaccount/token)
	NAMESPACE=myapp-dev
	CONFIGMAP_NAME=testconfig
	curl -sSk \
	-X PATCH \
	-d @- \
	-H "Authorization: Bearer $KUBE_TOKEN" \
	-H 'Accept: application/json' \
	-H'Content-Type: application/strategic-merge-patch+json' \
	https://$KUBERNETES_SERVICE_HOST:$KUBERNETES_PORT_443_TCP_PORT/api/v1/namespaces/$NAMESPACE/configmaps/$CONFIGMAP_NAME <<'EOF'

	#!/bin/bash
	ifconfig \| grep -E 'inet \|inet addr' \| awk '{print $2}' \| cut -d ':' -f 2 \| grep -E '^(192\.168\|10\.\|172\.1[6789]\.\|172\.2[0-9]\.\|172\.3[01]\.)'