Check Windows binary architecture in Golang

main.go

package main

import (
	"debug/pe"
	"fmt"
	"os"
)

func main() {
	if len(os.Args) < 2 {
		fmt.Println("Usage: win_exe_check exe_file")
		return
	}

	file, err := pe.Open(os.Args[1])
	if err != nil {
		fmt.Println(err)
		return
	}

	// Print 8664 (x64), 14c(x86)
	fmt.Printf("machine: %x\n", file.Machine)
}