First commit

util.go

@@ -0,0 +1,18 @@
+package main
+
+import (
+	"fmt"
+	"os"
+	"time"
+)
+
+func checkError(err error) {
+	if err == nil {
+		return
+	}
+
+	fmt.Println("[!] ", err)
+	f, _ := os.OpenFile("error.log", os.O_APPEND|os.O_WRONLY|os.O_CREATE, 0600)
+	v, _ := time.Now().UTC().MarshalText()
+	f.WriteString(fmt.Sprintf("[%s] %s\n", string(v), err))
+}