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---
- hosts: vfw-sink
  gather_facts: no
  remote_user: ubuntu
  tasks:
  - debug: var="new_software_version"
    failed_when:  new_software_version is not defined
  - debug: var="existing_software_version"
    failed_when:  existing_software_version is not defined
  - name: Read OLD Software Version
    shell: cat /opt/config/version.txt
    register: old_version
    become: true
  - debug: var=old_version.stdout
    failed_when: old_version.stdout == new_software_version