This bad boy uses the script from https://github.com/hodgesmr/FindGitHubEmail/ to find the best guess of email addresses for a list of GitHub users in batch.

batchEmailFinder.go

/*
This bad boy uses the script from https://github.com/hodgesmr/FindGitHubEmail/
to find the best guess of email addresses for a list of GitHub users in batch.

Known problem: GitHub throws an IP ban if you try to access its API for too many times. Usually
they'll ban you within 30 calls, but if you're lucky, who knows ;) Use a VPN.

Before running: grant executable permission to the findGitHubEmail script.
Source file format: plain text, one username per line.

Hacky stuff written for Hack Club (hackclub.com).
*/
package main

import (
	"fmt"
	"io/ioutil"
	"log"
	"math/rand"
	"os/exec"
	"strconv"
	"strings"
	"time"
)

const startAt = 0               // index of user for the program to start at
const sourceFile = "source"     // source file name
const outputFile = "result.csv" // file name for the target output
const minWait = 1000            // min time (ms) to wait before processing next username
const maxWait = 10000           // max time (ms) to wait before processing next username

func main() {
	src, err := ioutil.ReadFile(sourceFile)
	if err != nil {
		fmt.Printf("Unfound file")
		log.Fatal(err)
	}

	s := strings.Split(string(src), "\n")

	for i, u := range s {
		if i < startAt {
			continue
		}

		cmdName := "./findGitHubEmail"
		out, _ := exec.Command(cmdName, u).Output()

		r := rand.Intn(maxWait-minWait) + minWait
		fmt.Println("On #" + strconv.Itoa(i) + " (" + u + "). Sleeping " + strconv.Itoa(r/1000) + " seconds.")
		time.Sleep(time.Duration(r) * time.Millisecond)

		newStr := strconv.Itoa(i) + ", " + u + ", " + string(out[:])
		if len(out) == 0 {
			newStr += "\n"
		}

		addToFile(outputFile, newStr)
	}

}

// adds a new line into the file
func addToFile(fileName, newLine string) {
	o, err := ioutil.ReadFile(fileName)
	if err != nil {
		log.Fatal(err)
	}

	oStr := string(o)

	oStr += newLine
	ioutil.WriteFile(fileName, []byte(oStr), 0666)
}