Run external program in the background

---

examples/run-external-in-background/run_external_in_background.go

package main

import (
    "fmt"
    "log"
    "os/exec"
    "time"
)

func main() {
    cmd := exec.Command("sleep", "2")
    fmt.Printf("%v - Start.\n", time.Now().Unix())
    err := cmd.Start()
    if err != nil {
        log.Fatal(err)
    }
    fmt.Printf("%v - We could do here something before we wait for the job to finish.\n", time.Now().Unix())
    err = cmd.Wait()
    fmt.Printf("%v - Command finished\n", time.Now().Unix())
    if err != nil {
        fmt.Printf("There was an error in the process: %v\n", err)
    }
}