diff --git a/util.go b/util.go
new file mode 100644
index 0000000..4c8484b
--- /dev/null
+++ b/util.go
@@ -0,0 +1,28 @@
+package main
+
+import (
+	"errors"
+	"fmt"
+	"io/fs"
+	"os"
+)
+
+const (
+	systemdCheckPath = "/run/systemd/system"
+)
+
+// https://www.freedesktop.org/software/systemd/man/sd_booted.html
+func sdBooted() bool {
+	_, err := os.Stat(systemdCheckPath)
+	if err != nil {
+		if verbose {
+			if errors.Is(err, fs.ErrNotExist) {
+				fmt.Println("System not booted through systemd")
+			} else {
+				fmt.Println("Error accessing", systemdCheckPath+":", err.Error())
+			}
+		}
+		return false
+	}
+	return true
+}