Golang : Check if a directory exist or not

In this short tutorial, we will learn how to check if a parameter passed as argument is directory or not. It is pretty straight forward by using the os.Stat.IsDir() function

checkdir.go

 package main

 import (
 "os"
 "flag"
 "fmt"
 )

 func main() {
 flag.Parse() // get the arguments from command line

 source_dir := flag.Arg(0) // get the source directory from 1st argument

 fmt.Println("Source :" + source_dir)

 // check if the source dir exist
 src, err := os.Stat(source_dir)
 if err != nil {
 panic(err)
 }

 // check if the source is indeed a directory or not
 if !src.IsDir() {
 fmt.Println("Source is not a directory")
 os.Exit(1)
 }

 }

Hope this will be helpful.