How to do it...

1. Open the console and create the folder chapter01/recipe05.
2. Navigate to the directory.
3. Create the main.go file with the following content:

        package main

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

        func main() {
          ex, err := os.Executable()
          if err != nil {
            panic(err)
          }

          // Path to executable file
          fmt.Println(ex)

          // Resolve the direcotry
          // of the executable
          exPath := filepath.Dir(ex)
          fmt.Println("Executable path :" + exPath)
 
          // Use EvalSymlinks to get
          // the real path.
          realPath, err := filepath.EvalSymlinks(exPath)
          if err != nil {
            panic(err)
          }
          fmt.Println("Symlink evaluated:" + realPath)
        }

1. Build the binary by the command go build -o binary.
2. Execute the binary by the Terminal call ./binary.
3. See the output. It should display the absolute path on your machine: