fixes

Pilz.Updating.Client/Utils.cs

@@ -1,4 +1,5 @@
-using System.Runtime.InteropServices;
+using System.Diagnostics;
+using System.Runtime.InteropServices;
 using Pilz.Runtime;
 
 namespace Pilz.Updating.Client;
@@ -68,4 +69,21 @@ public static class Utils
             }
         }
     }
+
+    public static void MakeExecutable(string filePath)
+    {
+        var pChmod = new Process
+        {
+            StartInfo = new ProcessStartInfo
+            {
+                FileName = "chmod",
+                Arguments = $"+x \"{filePath}\"",
+                RedirectStandardOutput = true,
+                UseShellExecute = false,
+                CreateNoWindow = true,
+            },
+        };
+        pChmod.Start();
+        pChmod.WaitForExit();
+    }
 }