Go script to calculate free space on a machine

free_space.go

package main

import (
  "syscall"
  "os"
  "fmt"
  "math"
)

func main() {
  var stat syscall.Statfs_t

  wd, err := os.Getwd()
  if err != nil {
      panic(err)
  }

  syscall.Statfs(wd, &stat)

  // Available blocks * size per block = available space in bytes / 1024 ^ 3 to convert into gb.
  //fmt.Printf("Free: %d GB\n",  stat.Bavail * uint64(stat.Bsize) / (1024 * 1024 * 1024))
  fmt.Printf("Free: %f GB\n",  float64(stat.Bavail * uint64(stat.Bsize)) / (math.Pow(1024, 3)))
}