Go YAML

main.go

package main

import (
	"fmt"
	"log"

	"gopkg.in/yaml.v1"
)

var data = `
---
hostname: 127.0.0.1
username: vagrant
ssh_key: "/Users/mlafeldt/.vagrant.d/insecure_private_key"
port: '2222'
last_action: create
`

type T struct {
	Hostname   string `yaml:"hostname"`
	Username   string `yaml:"username"`
	SSHKey     string `yaml:"ssh_key"`
	Port       string `yaml:"port"`
	LastAction string `yaml:"last_action"`
}

func main() {
	t := T{}

	err := yaml.Unmarshal([]byte(data), &t)
	if err != nil {
		log.Fatalf("error: %v", err)
	}
	fmt.Printf("--- t:\n%+v\n\n", t)

	fmt.Printf("ssh -i %s -p %s %s@%s\n", t.SSHKey, t.Port, t.Username, t.Hostname)
}