example for https://notion.so/2db8f87eb5084bfba59f46deb2f51159 (made with https://codeeval.dev)

main.go

package main

import (
	"fmt"
	"log"
	"os"
)

func main() {
	// :show start
	st, err := os.Stat("main.go")
	if err != nil {
		log.Fatalf("GetFileSize failed with '%s'\n", err)
	}
	fmt.Printf(`Name: %s
Size: %d
IsDir: %v
Mode: %x
ModTime: %s
OS info: %#v
`, st.Name(), st.Size(), st.IsDir(), st.Mode, st.ModTime(), st.Sys())
	// :show end
}