diff --git a/flake.nix b/flake.nix
index 5ef6ea1..1826fb7 100644
--- a/flake.nix
+++ b/flake.nix
@@ -15,7 +15,7 @@
         in {
           tsvnstat = pkgs.buildGoModule {
             pname = "tsvnstat";
-            version = "v0.0.5";
+            version = "v0.0.6";
             src = ./.;
 
             vendorSha256 = "sha256-RNhu1gQ62Hg8Fhiw9uIS+b4YaAHtZMaqbelMKv+oZjM=";
diff --git a/generate_images.sh b/generate_images.sh
deleted file mode 100755
index fb67042..0000000
--- a/generate_images.sh
+++ /dev/null
@@ -1,14 +0,0 @@
-#!/usr/bin/env sh
-
-set -x
-
-for i in $@; do
-	vnstati --style 1 -L -s -o ${i}-s.png $i
-	vnstati --style 1 -L --fivegraph 576 218 -o ${i}-5g.png $i
-	vnstati --style 1 -L -hg -o ${i}-hg.png $i
-	vnstati --style 1 -L -h 24 -o ${i}-h.png $i
-	vnstati --style 1 -L -d 30 -o ${i}-d.png $i
-	vnstati --style 1 -L -t 10 -o ${i}-t.png $i
-	vnstati --style 1 -L -m 12 -o ${i}-m.png $i
-	vnstati --style 1 -L -y 5 -o ${i}-y.png $i
-done
diff --git a/main.go b/main.go
index 7e8b4c7..b7d13a8 100644
--- a/main.go
+++ b/main.go
@@ -16,12 +16,18 @@ import (
 	"tailscale.com/tsnet"
 )
 
-//go:embed generate_images.sh
-var genScript []byte
-
 //go:embed style.css
 var style string
 
+func runCmd(cmd string, dir string, args ...string) {
+	genCmd := exec.Command(cmd, args...)
+	genCmd.Dir = dir
+	out, err := genCmd.Output()
+	if err != nil {
+		log.Println(string(out), err)
+	}
+}
+
 func main() {
 	tmpDir, err := os.MkdirTemp("", "tsvnstat")
 	if err != nil {
@@ -30,29 +36,10 @@ func main() {
 
 	defer os.RemoveAll(tmpDir)
 
-	tmpFile, err := os.CreateTemp("", "generate_images.sh")
-	if err != nil {
-		log.Fatal(err)
-	}
-
-	defer os.Remove(tmpFile.Name())
-
-	if _, err := tmpFile.Write(genScript); err != nil {
-		log.Fatal(err)
-	}
-	if err := tmpFile.Close(); err != nil {
-		log.Fatal(err)
-	}
-
-	err = os.Chmod(tmpFile.Name(), 0700)
-	if err != nil {
-		log.Fatal(err)
-	}
-
 	name := flag.String("name", "", "name of service")
 	dir := flag.String("dir", tmpDir, "directory containing vnstat images")
 	key := flag.String("key", "", "path to file containing the api key")
-	shell := flag.String("sh", "/bin/sh", "path to interpreter")
+	vnstati := flag.String("vnstati", "/bin/vnstati", "path to vnstati")
 	flag.Parse()
 
 	s := &tsnet.Server{
@@ -80,27 +67,25 @@ func main() {
 
 	go func() {
 		for {
-			log.Printf("running %q in %q", tmpFile.Name(), tmpDir)
-
 			ifaces, err := net.Interfaces()
 			if err != nil {
 				log.Fatal("can't get interfaces...", err)
 			}
 
-			cmd := []string{tmpFile.Name()}
-			for _, intf := range ifaces {
-				cmd = append(cmd, intf.Name)
+			for _, iface := range ifaces {
+				if iface.Flags&net.FlagUp == 0 {
+					continue
+				}
+				runCmd(*vnstati, *dir, "--style", "1", "-L", "-s", "-o", fmt.Sprintf("%s-s.png", iface.Name), iface.Name)
+				runCmd(*vnstati, *dir, "--style", "1", "-L", "--fivegraph", "576", "218", "-o", fmt.Sprintf("%s-5g.png", iface.Name), iface.Name)
+				runCmd(*vnstati, *dir, "--style", "1", "-L", "-hg", "-o", fmt.Sprintf("%s-hg.png", iface.Name), iface.Name)
+				runCmd(*vnstati, *dir, "--style", "1", "-L", "-h", "24", "-o", fmt.Sprintf("%s-h.png", iface.Name), iface.Name)
+				runCmd(*vnstati, *dir, "--style", "1", "-L", "-d", "30", "-o", fmt.Sprintf("%s-d.png", iface.Name), iface.Name)
+				runCmd(*vnstati, *dir, "--style", "1", "-L", "-t", "10", "-o", fmt.Sprintf("%s-t.png", iface.Name), iface.Name)
+				runCmd(*vnstati, *dir, "--style", "1", "-L", "-m", "12", "-o", fmt.Sprintf("%s-m.png", iface.Name), iface.Name)
+				runCmd(*vnstati, *dir, "--style", "1", "-L", "-y", "5", "-o", fmt.Sprintf("%s-y.png", iface.Name), iface.Name)
 			}
 
-			genCmd := exec.Command(*shell, cmd...)
-			genCmd.Dir = *dir
-			out, err := genCmd.Output()
-			if err != nil {
-				log.Fatal("can't run generation script", err)
-			}
-
-			log.Println(string(out))
-
 			time.Sleep(5 * time.Minute)
 		}
 	}()