Rich Kuzsma rkuzsma

I couldn't get the current version of NodeJS to install on Raspberry Pi. I kept getting errors like this during installation:

node: /usr/lib/arm-linux-gnueabihf/libstdc++.so.6: version `CXXABI_1.3.9' not found (required by node)
node: /usr/lib/arm-linux-gnueabihf/libstdc++.so.6: version `GLIBCXX_3.4.21' not found (required by node)
nvm is not compatible with the npm config "prefix" option: currently set to ""
Run `nvm use --delete-prefix v12.2.0` to unset it.

I manually installed an older version of Node and npm using a tarball download. Note that I had to use the armv6l, not armv7, to prevent the error.

Here's an example snippet for how to configure karma.conf.js to use Dockerized Chrome Headless and Dockerized Firefox Headless.

See also how to let Karma run JavaScript tests on Internet Explorer 11 in Windows with VirtualBox on Mac OS X

You have to npm install @rkuzsma/karma-docker-launcher. And, because this module name is scoped, Karma won't automatically recognize it by the karma-* prefix, so the plugins addition below is necessary.

// karma.conf.js
module.exports = function (config) {
  config.set({

Follow these steps to let Karma run your specs on IE11 on your Mac.

Download and install Oracle VirtualBox for Mac.
Download the IE11 Win8 VM at https://developer.microsoft.com/en-us/microsoft-edge/tools/vms/

To unzip, run:

cd ~/Downloads
ditto -x -k IE11.Win81.VirtualBox.zip IE11.Win81.VirtualBox

Store the secrets on a local machine:

mkdir -p ~/.secrets
touch ~/.secrets/my_secrets
chmod 600 ~/.secrets/my_secrets
cat << EOF | gpg -c -o ~/.secrets/my_secrets
export SOME_SECRET_VARIABLE=some value
export ANOTHER_SECRET_VARIABLE=another value
EOF

	```
	docker run -p 6080:80 -v /dev/shm:/dev/shm dorowu/ubuntu-desktop-lxde-vnc
	```

	Browse to http://127.0.0.1:6080/

	In the VNC UI, run the LXTerminal. Paste these commands to install a given version of Firefox. Set `FF_VERS` to the release you want. See available releases at http://releases.mozilla.org/pub/firefox/releases

	```
	apt-get update && apt-get install wget

	#!/bin/bash
	# Usage:
	# update_etc_hosts "some-host-name" "some-ip-addr"
	update_etc_hosts () {
	HOST_NAME=$1
	HOST_IP=$2
	NO_SUDO=$3
	HOST_ENTRY="$HOST_IP $HOST_NAME"
	HOSTS_FILE="/etc/hosts"
	TMPFILE=$(mktemp)

	# Created under Apache 2.0 License.
	# Author: Rich Kuzsma
	# Date: July 23, 2017

	# Convert time duration strings like "10s" into milliseconds
	module TimeUnit
	UNITS_IN_MS = {
	'd' => 86_400_000,
	'h' => 3_600_000,
	'm' => 60_000,

	# The sed expression is intended to replace this:
	# %CPU %MEM COMMAND
	# 0.0 0.1 some really really really long process args
	# with this:
	# %CPU %MEM COMMAND
	# 0.0 0.1 some reall...ocess args
	# In the sed regex:
	# [^[:space:]]* means "a sequence non-whitespace characters"
	# \s* means "a sequence of whitespace characters"
	# The sed regex matches the first and last 10 characters of the process args,

	FROM openjdk:8

	# Download jamvm from source and apply this patch to src/classlib/openjdk/natives.c:
	# https://sourceforge.net/u/tdaitx/jamvm/ci/f342a84116edfe28ab75ebfa17fcf929bafb02c1/tree/src/classlib/openjdk/natives.c?diff=236f9d849cf52faeb150a6cd5ba6fbeb61bd2f1f

	RUN apt-get update -qq && apt-get install -y \
	vim build-essential zlib1g-dev \
	openjdk-8-jre-jamvm libtool autoconf automake

	RUN git clone https://git.code.sf.net/p/jamvm/code jamvm-code

	#!/bin/bash
	kubectl get nodes --selector=kubernetes.io/role!=master -o jsonpath={.items[*].status.addresses[?\(@.type==\"ExternalIP\"\)].address}