Using os.StartProcess() in Go for platform-independent system command execution.

startProcess.go

package main

import (
	"os"
	"os/exec"
)

func Start(args ...string) (p *os.Process, err error) {
	if args[0], err = exec.LookPath(args[0]); err == nil {
		var procAttr os.ProcAttr
		procAttr.Files = []*os.File{os.Stdin,
			os.Stdout, os.Stderr}
		p, err := os.StartProcess(args[0], args, &procAttr)
		if err == nil {
			return p, nil
		}
	}
	return nil, err
}

func main() {
	if proc, err := Start("ping", "-c 3", "www.google.com"); err == nil {
		proc.Wait()
	}
	if proc, err := Start("zsh"); err == nil {
		proc.Wait()
	}
}

Thank you @lee8oi
I've tried using io pipes, MultiReader and bufio.NewScanner, but with no luck

For anyone reading, im trying to do something like this, but using os.StartProcess instead of exec.Command

multi := io.MultiReader(stdout, stderr)

if err := cmd.Start(); err != nil {
return err
}

in := bufio.NewScanner(multi)

for in.Scan() {
log.Printf(in.Text()) // write each line to the log or anything else
}