exec: "date": executable file not found in %PATH%

[Th3x0d3r]

Hello there, 

Trying to run the Example: https://golang.org/pkg/os/exec/#Cmd.Output

package main

import (
    "fmt"
    "log"
    "os/exec"
)

func main() {
    out, err := exec.Command("date").Output()
    if err != nil {
        log.Fatal(err)
    }
    fmt.Printf("The date is %s\n", out)
}

I get:

exec: "date": executable file not found in %PATH%

my env:

set GOARCH=386
set GOBIN=
set GOEXE=.exe
set GOHOSTARCH=386
set GOHOSTOS=windows
set GOOS=windows
set GOPATH=C:\app\
set GORACE=
set GOROOT=C:\Go
set GOTOOLDIR=C:\Go\pkg\tool\windows_386
set GO15VENDOREXPERIMENT=
set CC=gcc
set GOGCCFLAGS=-m32 -mthreads -fmessage-length=0
set CXX=g++
set CGO_ENABLED=1

Any clue ?

Thanks

[Tim K]

There's no date.exe by default on Windows, though it *may* work if you install Cygwin for example (or similar or just a working date.exe from somewhere) and make sure it's in your PATH.

[Th3x0d3r]

What I'm trying to do is:

out, err := exec.Command("echo","%PROCESSOR_ARCHITECTURE%").Output()

but same result:

exec: "echo": executable file not found in %PATH%

[Tim K]

Same deal. There's no echo.exe, echo is a built-in of cmd.exe for example. Try executing instead:

cmd /c "echo %PROCESSOR_ARCHITECTURE%"

[Th3x0d3r]

Thanks, It does the trick. !

[Sourav Singh]

How do I do this for linux ?

[Kurtis Rader]

On Wed, Nov 18, 2020 at 2:09 PM Sourav Singh <sourav.s...@gmail.com> wrote:

How do I do this for linux ?

Do what, exactly? The exec.Command function works fine on Linux and because Linux has external commands such as "echo" you're unlikely to have the sort of problems the O.P. was having on Windows. Also, in the future please start a new thread rather than replying to an old thread that is probably not relevant to your problem. 

--

Kurtis Rader

Caretaker of the exceptional canines Junior and Hank

[ben...@gmail.com]

If you do want to find the processor architecture, instead of shelling out, can you use runtime.GOARCH? See https://golang.org/pkg/runtime/#pkg-constants -- it has a value like "amd64", similar to PROCESSOR_ARCHITECTURE on Windows. It also works on different platforms/OSes.