Golang lsof server

package main

import (
  "net/http"
  "fmt"
  "os/exec"
  "flag"
)

func main(){
   http.HandleFunc("/",  readHandle)
   port := flag.Int("port", 2012, "Listen Port")
   flag.Parse()
   http.ListenAndServe(fmt.Sprintf(":%d", *port), nil)
 
}


func readHandle(w http.ResponseWriter, r *http.Request){
        /* Command */
        lsof := exec.Command("lsof", r.FormValue("path"))
        wc := exec.Command("wc", "-l")
        /* Pipe */
        lsofOut,_ := lsof.StdoutPipe()
        /* Command Start */
        lsof.Start()
        /* Stdin */
        wc.Stdin = lsofOut
        out,_ := wc.Output()

        fmt.Fprintf(w, "%v", r.FormValue("path"))
        fmt.Fprintf(w, "%s", out)
        fmt.Fprintf(w, "%s", r.URL.Path[1:])
}

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