diff --git a/README.md b/README.md
index 0331185..d73691c 100644
--- a/README.md
+++ b/README.md
@@ -102,6 +102,15 @@ The tasks you want to run should be contained under the `tasks:` with two fields
 The name field is for the user of meshbook, to clarify what the following command does in a summary.<br>
 The command field actually gets executed on the end-point.<br>
 
+### Granual Operating System control:
+
+I have made the program so it can have a basic filter with the Operating systems. If you have a mixed group, then you need to match the image below like this:
+
+<img src="./assets/meshcentral_os.png" alt="MeshCentral Operating System Version" width="600"/><br>
+<img src="./assets/meshbook_yaml_os.png" alt="MeshBook yaml example" width="600"/>
+
+This will filter the nodes/machines in the MeshCentral group to the ones matching this. Very basic and open for feedback. This must match the full string, not case sensitive.
+
 # Example:
 
 For the example, I used the following yaml file (you can find more in [this directory](./examples/)):
diff --git a/assets/meshbook_yaml_os.png b/assets/meshbook_yaml_os.png
new file mode 100644
index 0000000..fb445cb
Binary files /dev/null and b/assets/meshbook_yaml_os.png differ
diff --git a/assets/meshcentral_os.png b/assets/meshcentral_os.png
new file mode 100644
index 0000000..5e419f2
Binary files /dev/null and b/assets/meshcentral_os.png differ
diff --git a/examples/echo_example.yaml b/examples/echo_example.yaml
index a64d151..6900e37 100644
--- a/examples/echo_example.yaml
+++ b/examples/echo_example.yaml
@@ -1,6 +1,7 @@
 ---
 name: Echo a string to the terminal through the meshbook example.
 group: "Dev"
+target_os: Debian GnU/Linux 12 (bookworm)
 variables:
   - name: file
     value: "/etc/os-release"
diff --git a/meshbook.py b/meshbook.py
index 153ffaf..ef06352 100644
--- a/meshbook.py
+++ b/meshbook.py
@@ -103,7 +103,10 @@ async def gather_targets(playbook: dict, group_list: dict) -> dict:
         for group in group_list:
             for device in group_list[group]:
                 if device["reachable"] and pseudo_target == device["device_name"]:
-                    target_list.append(device["device_id"])
+                    if "target_os" in playbook and str(playbook["target_os"]).lower() == str(device["device_os"]).lower():
+                        target_list.append(device["device_id"])
+                    elif "target_os" not in playbook:
+                        target_list.append(device["device_id"])
 
     elif "group" in playbook and "device" not in playbook:
         pseudo_target = playbook["group"]
@@ -112,8 +115,12 @@ async def gather_targets(playbook: dict, group_list: dict) -> dict:
             if pseudo_target == group:
                 for device in group_list[group]:
                     if device["reachable"]:
-                        target_list.append(device["device_id"])
+                        if "target_os" in playbook and str(playbook["target_os"]).lower() == str(device["device_os"]).lower():
+                            target_list.append(device["device_id"])
+                        elif "target_os" not in playbook:
+                            target_list.append(device["device_id"])
 
+    print(target_list)
     return target_list
 
 async def execute_playbook(session: meshctrl.Session, targets: dict, playbook: dict, group_list: dict) -> None: