package main import (     "bytes"     "log"     "os/exec"     "strconv"     "strings" ) type Process struct {     pid int     cpu float64 } func main() {     cmd := exec.Command("ps", "aux")     var out bytes.Buffer     cmd.Stdout = &out     err := cmd.Run()     if err != nil {         log.Fatal(err)     }     processes := make([]*Process, 0)     for {         line, err := out.ReadString('\n')         if err!=nil {             break;         }         tokens := strings.Split(line, " ")         ft := make([]string, 0)         for _, t := range(tokens) {             if t!="" && t!="\t" {                 ft = append(ft, t)             }         }         log.Println(len(ft), ft)         pid, err := strconv.Atoi(ft[1])         if err!=nil {             continue         }         cpu, err := strconv.ParseFloat(ft[2], 64)         if err!=nil {             log.Fatal(err)         }         processes = append(processes, &Process{pid, cpu})     }     for _, p := range(processes) {         log.Println("Process ", p.pid, " takes ", p.cpu, " % of the CPU")     } }