[Go] Command Output

main.go

package main

import(
	"log"
	"os/exec"
	"io"
)

func main() {
	process := exec.Command("ls", "-la")

	stdout, err := process.StdoutPipe()
	if err != nil {
		log.Fatal(err)
	}

	if err = process.Start(); err != nil {
		log.Fatal(err)
	}

	done := make(chan struct{}, 1)

	go func () {
		outputs := make([]byte, 512)
		line := make([]byte, 80)

		for {
			if n, err := stdout.Read(line); err != nil {
				if err == io.EOF {
					if n > 0 {
						outputs = append(outputs, line...)
					}
					break
				}

				log.Fatal(err)
			}

			outputs = append(outputs, line...)

			line = line[0:]
		}

		log.Print(string(outputs))

		done <- struct{}{}
	}()

	if err = process.Wait(); err != nil {
		log.Fatal(err)
	}

	<-done
}