xingxing

function wait_vm_up {
  local counter=0

  local readonly project=${1:?"project required"}
  local readonly instance=${2:?"instance required"}
  local readonly zone=${3:?"zone required"}
  local readonly user=${4:?"user required"}
  local readonly maxRetry=${5:-100}

  echo "Project: $project"

melioratus

org-mode syntax - superscripts and subscripts example 1

• Add #+OPTIONS: ^:{} to your org-mode file to explicitly enable superscripts and subscripts.

superscripts

To create a superscript put ^{ characters at the start of the superscript text and } at the end of the superscript text, e.g. word^{superscript} will render as word^superscript.

subscripts

To create a subscript put _{ characters at the start of the subscript text and } at the end of the subscript text, e.g. word_{subscript} will render as word_subscript.

References

zikes

# Enable the kube-ps1 oh-my-zsh plugin
plugins = (
  git
  kube-ps1
)

# The output of the kube_ps1 function is text, so it can be used
# directly as a custom p9k segment
POWERLEVEL9K_CUSTOM_KUBE_PS1='kube_ps1'

BretFisher

2021 Update: Easiest option is Justin's repo and image

Just run this from your Mac terminal and it'll drop you in a container with full permissions on the Docker VM. This also works for Docker for Windows for getting in Moby Linux VM (doesn't work for Windows Containers).

docker run -it --rm --privileged --pid=host justincormack/nsenter1

more info: https://github.com/justincormack/nsenter1

---

arsham

go test -run=. -bench=. -benchtime=5s -count 5 -benchmem -cpuprofile=cpu.out -memprofile=mem.out -trace=trace.out ./package | tee bench.txt
go tool pprof -http :8080 cpu.out
go tool pprof -http :8081 mem.out
go tool trace trace.out

go tool pprof $FILENAME.test cpu.out
# (pprof) list <func name>

# go get -u golang.org/x/perf/cmd/benchstat
benchstat bench.txt

paulgoetze

#!/bin/bash

# Erlang
ERLANG_VERSION=${ERLANG_VERSION:-20.2}
ERLANG_CACHED_DOWNLOAD="${HOME}/cache/OTP-${ERLANG_VERSION}.tar.gz"
ERLANG_DIR=${ERLANG_DIR:="$HOME/erlang"}

# Elixir
ELIXIR_VERSION=${ELIXIR_VERSION:-1.6.3}
ELIXIR_CACHED_DOWNLOAD="${HOME}/cache/elixir-v${ELIXIR_VERSION}.zip"

aaronjensen

# ATTENTION: This is now supported in plug_cowboy as of 2.1.0:
# https://hexdocs.pm/plug_cowboy/Plug.Cowboy.Drainer.html

defmodule DrainStop do
  @moduledoc """
  DrainStop Attempts to gracefully shutdown an endpoint when a normal shutdown
  occurs. It first shuts down the acceptor, ensuring that no new requests can be
  made. It then waits for all pending requests to complete. If the timeout
  expires before this happens, it stops waiting, allowing the supervision tree
  to continue its shutdown order.

Isaddo

/*
  Go on your labels page (https://github.com/user/repo/labels)

  Edit the following label array
  or
  Use this snippet to export github labels (https://gist.github.com/MoOx/93c2853fee760f42d97f)
  and replace it

  Paste this script in your console
  Press Enter!!

brienw

Deploying Elixir and Phoenix applications using Docker and Exrm

Goal

By the end of this quick guide, you will know how to compile a Phoenix app release using Exrm and run it inside a Docker container. I've found only a couple of articles that discuss getting an Elixir app up and running inside a Docker container, and even those only touched on some parts of the process. The idea is that this guide will give you a full end-to-end example of how to get all the pieces and parts working together so that you are able to deploy your Phoenix application inside a Docker container.

Assumptions

1. You already have a working Elixir environment with the Phoenix Framework installed
2. You have at least basic working knowledge of Docker, and have installed the Docker tools onto your local environment

shady-robot

Tmux is a "terminal multiplexer", it enables a number of terminals to be accessed and controlled from a single terminal.
    
If you use Debian/Ubuntu, you can just run apt-get install tmux, and voila. 
  
Since the title was about centos 7, then do the following step to install tmux.
  (1). tmux has a library dependency on libevent which, of course, isn’t installed by default. 
    $ wget https://github.com/downloads/libevent/libevent/libevent-2.0.21-stable.tar.gz
    $ tar xzvf libevent-2.0.21-stable.tar.gz
    $ cd libevent-2.0.21-stable
    $ ./configure && make