exec.Command("telnet", ... ) failed with "exit status -1"

[平民四月份]

Hi all.

    I had used os/exec to run "telent" under window 7 64bit, it 's failed with error : "exit status -1", the source as follow, how can i solve it ?

import (

"bytes"

"fmt"

"os/exec"

)

func main() {

    var (

        cmd *exec.Cmd

        out bytes.Buffer

    )

    cmd = exec.Command("telnet", "163.com", "80")

    //cmd.Env = os.Environ()

    cmd.Stdout = &out

    if err := cmd.Run(); err != nil {

        fmt.Println(err)  //exit status -1

        return

    }

    fmt.Println(out.String())

}

--
 Face the sea, for the spring flowers blossoming

[Scott Lawrence]

You should check to see if it prints anything to stderr.

Does telnet on windows require that stdout/stdin be a tty? Meaning, would the
following work:

$ telnet < instructions.txt > result.txt

?

> --
> Scott Lawrence
>
> go version go1.0.2
> Linux jagadai 3.4.8-1-ARCH #1 SMP PREEMPT Thu Aug 9 21:21:22 CEST 2012 x86_64
> GNU/Linux

--
Scott Lawrence

[Zizon Qiu]

Is telnet installed ?

[tade....@gmail.com]

May be you are missing straming mode setting on the remote machine where the telnet server is running on.

Enable the straming mode

1. Logon to machine klpwpst01.klp.no and klpwpst02.klp.no
2. Open a command prompt with Run as Administrator privilage.
3. Run following command

tlntadmn config mode=stream


[egon]

What are you trying to accomplish?

This looks a very weird way to use telnet.

There are telnet packages available:

* https://github.com/ziutek/telnet

* https://github.com/egonelbre/mud/tree/master/telnet/

+ egon