refactor

pkg/mesh/test_cmd.go

@@ -0,0 +1,23 @@
+package main
+
+import (
+	"os"
+	"os/exec"
+)
+
+func main() {
+	f, err := os.Open("/home/potassium/documents/wallpaper/8.png")
+	if err != nil {
+		panic(err)
+	}
+	cmd := exec.Command(
+		"swaybg",
+		"--image", "/dev/stdin",
+	)
+	cmd.Stderr = os.Stderr
+	cmd.Stdin = f
+	err = cmd.Run()
+	if err != nil {
+		panic(err)
+	}
+}