gistfile1.go

package main

import (
	"crypto/sha1"
	"fmt"
	"io"
	"bytes"
	"os/exec"
)

func sha(str string) string {
	h := sha1.New()
	io.WriteString(h, str)
	
	return fmt.Sprintf("%x", h.Sum(nil))
}


func main(){
	cmd := exec.Command("git", "write-tree")
    tree, err := cmd.Output()
    if err != nil {
        fmt.Println(err)
        return
    }
    fmt.Printf("%s", tree)

    cmd = exec.Command("git", "rev-parse", "HEAD")
    parent, err := cmd.Output()
    if err != nil {
        fmt.Println(err)
        return
    }
    fmt.Printf("%s", parent)
	s := `tree %s
parent %s
author CTF user <[email protected]> 1390424498 +0000
committer CTF user <[email protected]> 1390424498 +0000

Give me a Gitcoin

%d

`
	counter := 0
	for {
		hash := sha(fmt.Sprintf(s, tree, parent, counter))
		if bytes.Compare([]byte(hash), []byte("000001")) < 0{
			fmt.Println(counter)
			break
		}
		counter++
	}
}

prepare_index && git hash-object -t commit sample -w && git push origin master