On Sun, Apr 5, 2020 at 3:36 PM R Srinivasan <s...@srin.me> wrote:
>
> I cannot figure the error in the following.
> package main
>
> import (
> "io"
> "os"
> "os/exec"
> "strings"
> )
>
> func Run(args []string) {
> lf, _ := os.Create("lf.log")
> defer lf.Close()
> cmd := exec.Command(args[0], strings.Join(args[1:], " "))
> stderr, _ := cmd.StderrPipe()
> cmd.Start()
> io.Copy(lf, stderr)
> cmd.Wait()
> }
>
> func main() {
> args := []string{"go", "build", "./"}
> Run(args)
> }
>
> I can execute go build ./ and get an executable. However when I run it I get
> the following in the logfile:
>
> cat lf.log go build ./: unknown command Run 'go help build' for usage.
>
> I exected that the "exec" will just execute go build ./
>
> I did rename the exe to something else before running it.
>
> Anyone can spot the error?
Besides other comments, always check your error returns. Do that
before you ask for help on any program. Thanks.
Ian
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