Louis Brunner LouisBrunner

Port Forwarding in Mavericks

Since Mavericks stopped using the deprecated ipfw (as of Mountain Lion), we'll be using pf to allow port forwarding.

####1. anchor file Create an anchor file under /etc/pf.anchors/<anchor file> with your redirection rule like:

Story: Writing Scripts with Go

This is a story about how I tried to use Go for scripting. In this story, I’ll discuss the need for a Go script, how we would expect it to behave and the possible implementations; During the discussion I’ll deep dive to scripts, shells, and shebangs. Finally, we’ll discuss solutions that will make Go scripts work.

Why Go is good for scripting?

While python and bash are popular scripting languages, C, C++ and Java are not used for scripts at all, and some languages are somewhere in between.

	#!/custom/ree/bin/ruby

	# USAGE:
	#
	# echo "\|/path/to/core_helper.rb %p %s %u %g" > /proc/sys/kernel/core_pattern
	#

	require 'etc'
	require 'net/smtp'

	Adam
	Albert
	Andre
	Arnaud
	Aubert
	Aubry
	Bailly
	Barbier
	Baron
	Barre

	Agathe
	Alexandra
	Alexia
	Alice
	Alicia
	Amandine
	Ambre
	Amélie
	Anaël
	Anaëlle

	Aaron
	Adam
	Adrian
	Adrien
	Alexandre
	Alexis
	Amine
	Anthony
	Antoine
	Antonin

	# Install dependencies
	#
	# * checkinstall: package the .deb
	# * libpcre3, libpcre3-dev: required for HTTP rewrite module
	# * zlib1g zlib1g-dbg zlib1g-dev: required for HTTP gzip module
	apt-get install checkinstall libpcre3 libpcre3-dev zlib1g zlib1g-dbg zlib1g-dev && \

	mkdir -p ~/sources/ && \

	# Compile against OpenSSL to enable NPN

	function git_prompt_info() {
	ref=$(git symbolic-ref HEAD 2> /dev/null) \|\| return
	echo "$ZSH_THEME_GIT_PROMPT_PREFIX${ref#refs/heads/}$ZSH_THEME_GIT_PROMPT_SUFFIX"
	}

	curl --include \
	--no-buffer \
	--header "Connection: Upgrade" \
	--header "Upgrade: websocket" \
	--header "Host: example.com:80" \
	--header "Origin: http://example.com:80" \
	--header "Sec-WebSocket-Key: SGVsbG8sIHdvcmxkIQ==" \
	--header "Sec-WebSocket-Version: 13" \
	http://example.com:80/