Golang Get Hard disk partition remaining space size

This is a creation in Article, where the information may have evolved or changed.

The requirement is that, to remotely execute this command, return the size of the remaining space on each hard disk partition, and of course, the remaining space is too small to be processed.

package main

import (
	"fmt"
	"syscall"
//	"strings"
	gofstab "github.com/deniswernert/go-fstab"
)

type DiskStatus struct {
	All  uint64 `json:"all"`
	Used uint64 `json:"used"`
	Free uint64 `json:"free"`
}
const (
	B  = 1
	KB = 1024 * B
	MB = 1024 * KB
	GB = 1024 * MB
)
// disk usage of path/disk
func DiskUsage(path string) (disk DiskStatus) {
	fs := syscall.Statfs_t{}
	err := syscall.Statfs(path, &fs)
	if err != nil {
		return
	}
	disk.All = fs.Blocks * uint64(fs.Bsize)
	disk.Free = fs.Bfree * uint64(fs.Bsize)
	disk.Used = disk.All - disk.Free
	return
}
func main(){
	mounts ,_ :=gofstab.ParseSystem()
	
	for _,val := range mounts{
		//fmt.Printf("%v\n",val.File)
		if val.File == "swap"||val.File == "/dev/shm"||val.File == "/dev/pts"||val.File == "/proc"||val.File =="/sys"{
			continue
		}
		disk := DiskUsage(val.File)
		//fmt.Printf("All: %.2f GB\n", float64(disk.All)/float64(GB))
		//fmt.Printf("Used: %.2f GB\n", float64(disk.Used)/float64(GB))
		//fmt.Printf("Free: %.2f GB\n", float64(disk.Free)/float64(GB))
		diskall:=float64(disk.All)/float64(GB)
		diskfree:= float64(disk.Free)/float64(GB)
		
		dfpercent:=float64(diskfree/diskall)
		fmt.Printf("%s %.2f%%\n",val.File, dfpercent*100)
	}
}