golang daemon usage example

This article illustrates the use of the golang daemon as an example. I will share it with you for your reference as follows:

Using node wrote 1 socket background service, but sometimes hung,node1 exception is game over, so wrote 1 waiting.

package main

import (

        "log"

        "os"

        "os/exec"

        "time"

)

func main() {

        lf, err := os.OpenFile("angel.txt", os.O_CREATE | os.O_RDWR | os.O_APPEND, 0600)

        if err != nil {

                os.Exit(1)

        }

        defer lf.Close()

        //  The log 

        l := log.New(lf, "", os.O_APPEND)

        for {

                cmd := exec.Command("/usr/local/bin/node", "/*****.js")

                err := cmd.Start()

                if err != nil {

                        l.Printf("%s  Startup command failed ", time.Now().Format("2006-01-02 15:04:05"), err)

                        time.Sleep(time.Second * 5)

                        continue

                }

                l.Printf("%s  Process started ", time.Now().Format("2006-01-02 15:04:05"), err)

                err = cmd.Wait()

                l.Printf("%s  Process exits ", time.Now().Format("2006-01-02 15:04:05"), err)

                time.Sleep(time.Second * 1)

        }

}

There is also an shell implementation. Remember to give execution permission,chmod +x you_command

#! /bin/bash

while true; do

    ./you_command

done

I hope this article has been helpful to you in programming Go.