# that works only when inventory_hostname is a true hostname - not just an ip
  #- name: hostname matches inventory
  #  hostname:
  #    name: "{{inventory_hostname}}"

  - name: fix /etc/hosts when fix_hosts
    ansible.builtin.blockinfile:
      path: /etc/hosts
      block: "{{ lookup('file', 'templates/blockinfile_hosts_ke') }}"
      prepend_newline: true
      append_newline: true
    diff: true
    when: fix_hosts == 'yes'

  - name: shared - check if gnu screen is installed
    ansible.builtin.shell:
      executable: /bin/bash
      cmd: "[[ -x `which screen` ]] && echo there || echo absent"
    register: gnu_screen
    changed_when: false
    check_mode: false

  - name: shared - backup and clean-up stock screenrc (no check mode)
    ansible.builtin.shell:
      executable: /bin/bash
      cmd: |
        if [[ -f /etc/screenrc.dist ]]; then
          echo already
        else
          mv -i /etc/screenrc /etc/screenrc.dist && \
          grep -vE '^#|^$' /etc/screenrc.dist > /etc/screenrc.clean && \
          grep -vE '^#|^$' /etc/screenrc.dist > /etc/screenrc && echo changed
        fi
    register: backup_screenrc
    changed_when: >-
      'changed' in backup_screenrc.stdout
    when: gnu_screen.stdout == 'there'

  - name: shared - screenrc
    ansible.builtin.copy:
      src: templates/screenrc
      dest: /etc/
      mode: 0644
    diff: true
    when: gnu_screen.stdout == 'there'

  - name: shared - priviledged and system-wide helper scripts
    ansible.builtin.copy:
      src: "templates/{{item}}"
      dest: /usr/local/sbin/
      mode: 0755
    with_items:
      - what_eth_drivers.sh
    diff: true

  #- name: define MAILFROM in cron
  #  ansible.builtin.cron:
  #    name: MAILFROM
  #    env: yes
  #    job: root@{{inventory_hostname}}