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• How To Build and Install Go Programs
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student@client1:~$ sudo apt install golang-go

student@client1:~$ mkdir gowebd

student@client1:~$ cd gowebd/

student@client1:~/gowebd$ cat main.go

package main

import (
        "fmt"
        "log"
        "net/http"
        "os"
)

const ver = "ver1.1"

func main() {
        http.HandleFunc("/", HelloServer)
        fmt.Printf("Starting server at port 80\n")
        if err := http.ListenAndServe(":80", nil); err != nil {
                log.Fatal(err)
        }
}

func HelloServer(w http.ResponseWriter, r *http.Request) {
        hostname, err := os.Hostname()
        if err != nil {
                panic(err)
        }
        fmt.Fprint(w, "Hello world from gowebd on " + hostname + " " + ver + "\n")
}

student@client1:~/gowebd$ sudo go run main.go

student@client1:~/gowebd$ go mod init gowebd

student@client1:~/gowebd$ sudo go build -o /usr/local/sbin/gowebd

student@client1:~/gowebd$ sudo /usr/local/sbin/gowebd