Changing directories with Go exec.command

main.go

package main

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

func main() {
	dir := flag.String("dir", "", "the directory to list contents")
	flag.Parse()

	cmd := exec.Command("ls", "-la")

	if *dir != "" {
		cmd.Dir = *dir
	}

	cmd.Stdout = os.Stdout

	if err := cmd.Run(); err != nil {
		log.Fatal(err)
	}
}