RaviTeja Pothana RaviTezu

Here are several different ways to test a TCP port without telnet.

BASH (man page)

$ cat < /dev/tcp/127.0.0.1/22
SSH-2.0-OpenSSH_5.3
^C

$ cat &lt; /dev/tcp/127.0.0.1/23

Picking the right architecture = Picking the right battles + Managing trade-offs

User cases (description of sequences of events that, taken together, lead to a system doing something useful)
- Who is going to use it?
- How are they going to use it?

stage 1: You believe you can make Go do object oriented programming. You want to do this by using clever struct embedding.
stage 2: You believe goroutines will solve all of your problems. You want to use goroutines for anything and everything that you can, who cares if the code becomes a bit more complicated
stage 3: You believe that instead of object oriented programming, interfaces will solve all of your problems. You want to define everything in terms of interfaces
stage 4: You believe channels will solve all of your problems. You want to do everything from synchronization, returning values, and flow control using channels.
stage 5: You now believe Go is not as powerful as people claim it to be. You feel like you're stripped of all of the nice tools and constructs that other languages provide.
stage 6: You realize that stages 1~5 were all just your imagination. You just didn't want to accept the Go way. Everything starts to make sense.
stage 7: You are now at peace

	#!/usr/bin/env bash
	set -e

	# The MIT License (MIT)

	# Copyright (c) 2018 RaviTezu

	# Permission is hereby granted, free of charge, to any person obtaining a copy
	# of this software and associated documentation files (the "Software"), to deal
	# in the Software without restriction, including without limitation the rights

	location / {
	## check for goget AND /namespace/project
	if ($args ~* "^go-get=1") {
	set $condition goget;
	}
	if ($uri ~ ^/([a-zA-Z0-9_-]+)/([a-zA-Z0-9_-]+)$) {
	set $condition "${condition}path";
	}
	if ($condition = gogetpath) {
	return 200 "<!DOCTYPE html><html><head><meta content='git.axon$uri git ssh://[email protected]:2200$uri.git' name='go-import'></head></html>";

	package main

	import (
	"net"
	"os/exec"

	"github.com/k0kubun/pp"
	)

	func Hosts(cidr string) ([]string, error) {

	sudo su -

	# stuff we need to build from source
	apt-get install libpcre3-dev build-essential libssl-dev

	# get the nginx source
	cd /opt/
	wget http://nginx.org/download/nginx-0.8.54.tar.gz
	tar -zxvf nginx*
	# we'll put the source for nginx modules in here