``` package main import ( "log" "os" ) var ( fileInfo *os.FileInfo err error ) func main() { // 文件不存在则返回error fileInfo, err := os.Stat("test.txt") if err != nil { if os.IsNotExist(err) { log.Fatal("File does not exist.") } } log.Println("File does exist. File information:") log.Println(fileInfo) } ```