gistfile1.txt

package main

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

func executeCommand(command string, args ...string) (string, string, error) {
	cmd := exec.Command(command, args...)

	var stdoutBuf, stderrBuf bytes.Buffer
	cmd.Stdout = io.MultiWriter(os.Stdout, &stdoutBuf)
	cmd.Stderr = io.MultiWriter(os.Stderr, &stderrBuf)

	err := cmd.Run()
	if err != nil {
		return "", "", fmt.Errorf("cmd.Run() failed with %s", err)
	}
	outStr, errStr := string(stdoutBuf.Bytes()), string(stderrBuf.Bytes())
	return outStr, errStr, nil
}

func main() {
	out, errOut, err := executeCommand("ls", "-alh")
	if err != nil {
		log.Fatalf("Error executing command: %s", err)
	}

	fmt.Printf("\nout:\n%s\nerr:\n%s\n", out, errOut)
}