Bryan Hunt binarytemple

iex(64)> msg=%{"hello" => "there"}                                                                       
%{"hello" => "there"}
iex(65)> Enum.reduce( Map.to_list(msg) , "",  fn ({x,y},acc) -> x <> " " <>  y <> acc end ) 
"hello there"

add = fn x -> case x do {x,y,f} -> f.(x,y) {x,y} -> x + y _ -> raise("bad match") end end

iex(9)> 
add = fn x ->
case x do
{x,y,f} -> f.(x,y)
{x,y} -> x + y 
_ -> raise("bad match")
end
end

https://docs.docker.com/engine/admin/logging/overview/

docker run --log-driver=gelf --log-opt gelf-address=udp://logstash:12201 --log-opt tag="docker" packetops/hello-world

docker run --log-driver=syslog --log-opt syslog-address=udp://logstash:10514 packetops/hello-world

docker volume ls

docker volume create --name mysql-data 
mysql-data

Create a file inside a volume, the container is terminated. The container is restarted, and the file is still there

Tutorial

Some helpful automation commands to determine machine state

Discovering the current environment

docker-machine env default

Ensuring that the instance is stopped

Q: dumb question - mix start console with test environment - trying to get HTTPoison examples working in the console but exjsx is marked as a :test only dependency.

Obviously I can edit the file, but I’d like to know how to control this with CLI flags or whatever.

A: MIX_ENV=test iex -S mix

	```
	defmodule DockerMachine do
	def get_env() do
	case System.cmd("docker-machine", ["env","local"]) do
	{output,0} -> {
	:success, output \|>
	String.split("\n") \|>
	Enum.filter(fn x -> x =~ "export DOCKER" end) \|>
	Enum.map( fn l ->
	String.replace(l, ~r/export (.*)/,"\\1") \|>

	cat ~/bin/rx_bytes_60_seconds


	function rx_bytes() { ifconfig eth0 \| sed -ne '/RX bytes/{s_RX bytes:\([0-9]\)._\1_;s_ __g;p}'; }

	start=$(rx_bytes)
	sleep 60
	end=$(rx_bytes)
	echo "60 second count - rx_bytes = $(( end - start ))"