run multiple sniffer.py at once on a single node device

ansible/tasks/playbook_scapy-sniffer_GPS.yml

@@ -62,7 +62,7 @@
 
     - name: Double-check input variables
       assert:
-        that: "{{ _interfaces|length }} == _channels"
+        that: "{{ _interfaces|length }} == {{ _channels|length }}"
       delegate_to: 127.0.0.1
       run_once: True
 

config/broadcast.yml

@@ -6,4 +6,4 @@
 
   tasks:
     - name: say things to tty1
-      ansible.builtin.shell: echo {{ inventory_hostname }} {{ group_names[1] }} \n| sudo tee /dev/tty1 || /bin/true
+      ansible.builtin.shell: echo {{ inventory_hostname }} {{ group_names[1] }} | sudo tee /dev/tty1 && /bin/true