package main import ( "crypto/sha256" "encoding/hex" "fmt" "io" "os" ) func main() { var buf [32]byte h := sha256.New() lst := make([]any, 0, 64) for _, fname := range files { f, err := os.Open("assets/" + fname) if err != nil { panic(err) } _, err = io.Copy(h, f) if err != nil { panic(err) } s := hex.EncodeToString(h.Sum(buf[:0])) fmt.Println("sha256 of", fname, "=", s) lst = append(lst, s) h.Reset() f.Close() } f, err := os.Create("sha256.env") if err != nil { panic(err) } _, err = fmt.Fprintf(f, envtmpl, lst...) if err != nil { panic(err) } }