golang get current directory

main.go

package main

import (
	"fmt"
	"os"
	"path/filepath"
	"runtime"
)

func main() {
	fmt.Println(Getwd())
	fmt.Println(GetExecutable())
	fmt.Println(GetArg())
	fmt.Println(GetDirName())
}

// Return root/cwd in case of run binary in build directory with cwd working directory
// Return root/cwd in case of go run .. with cwd working directory
func Getwd() string {
	wd, _ := os.Getwd()
	return wd
}

// Return root/build in case of run binary in build directory with cwd working directory
// Return temporary directory in case of go run .. with cwd working directory
func GetExecutable() string {
	ex, _ := os.Executable()
	exPath := filepath.Dir(ex)
	return exPath
}

// Return root/build in case of run binary in build directory with cwd working directory
// Return temporary directory in case of go run .. with cwd working directory
func GetArg() string {
	dir, _ := filepath.Abs(filepath.Dir(os.Args[0]))
	return dir
}

// Return root in case of run binary in build directory with cwd working directory
// Return root in case of go run .. with cwd working directory
// Even in other computers, it returns same directory which ran go build
func GetDirName() string {
	_, filename, _, _ := runtime.Caller(0)
	return filepath.Dir(filename)
}