go_exedir/main.go

package main

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

	"github.com/kardianos/osext"
)

func main() {
	// Find location of executable with kardianos/osext
	exeFolder, err := osext.ExecutableFolder()
	if err != nil {
		log.Fatal(err)
	}

	//
	// These will require that the executable is in a directory within the $PATH

	// Find location of executable with Args[0] and exec.LookPath
	// Requires import of os, os/exec, and path
	argZero := os.Args[0]
	exePath, err := exec.LookPath(argZero)
	if err != nil {
		log.Fatal(err)
	}
	lookPath := path.Dir(exePath)

	// Output to comapre the results
	fmt.Printf("osext.ExeFolder : %s\n", exeFolder)
	fmt.Printf("exec.LookPath   : %s\n", lookPath)
}