diff --git a/hdiet.go b/hdiet.go
index 33f4d7a..d14737f 100644
--- a/hdiet.go
+++ b/hdiet.go
@@ -131,8 +131,9 @@ func process(file string) ([]point, error) {
 }
 
 type showFlags struct {
-	from DateFlag
-	to   DateFlag
+	from      DateFlag
+	to        DateFlag
+	nodisplay bool
 }
 
 func show(args showFlags) error {
@@ -172,7 +173,11 @@ func show(args showFlags) error {
 	if err != nil {
 		return err
 	}
-	return openGraphFile()
+	if args.nodisplay {
+		return nil
+	} else {
+		return openGraphFile()
+	}
 }
 
 func showCommand() (goutil.CommandFlagsInit, goutil.CommandFunc) {
@@ -180,6 +185,7 @@ func showCommand() (goutil.CommandFlagsInit, goutil.CommandFunc) {
 	flagsInit := func(s *flag.FlagSet) {
 		s.Var(&sf.from, "from", "YYYY-MM-DD (optional)")
 		s.Var(&sf.to, "to", "YYYY-MM-DD (optional)")
+		s.BoolVar(&sf.nodisplay, "nodisplay", false, "don't display graph image")
 	}
 	return flagsInit, func([]string) error { return show(sf) }
 }