go error handling

cmd.go

package main

import (
	"log"
	"os/exec"
)

func main() {
	cmd := exec.Command("./error.sh")
	log.Printf("Running command and waiting for it to finish...")
	out, err := cmd.Output()
	if out != nil {
		log.Printf("output %v", string(out))
	}
	if ee, ok := err.(*exec.ExitError); ok {
		log.Printf("error %v exit status %d", string(ee.Stderr), ee.ExitCode())
	}
}

error.sh

#!/bin/sh

echo "This is stdout"

echo "This is stderr" >& 2

exit 1

go.mod

module example.com/cmd

go 1.21.4