refactor ♻️: Refactor shell commands for better error handling and consistency

Updated shell commands to use `ansible.builtin.shell` with `executable: /bin/bash`, added `set -o pipefail` for improved error propagation, and refactored variable registration for clarity.

tasks/main.yml

@@ -41,19 +41,26 @@
       {{ en_interfaces }}
 
 - name: Check supported Wake-on-LAN modes
-  ansible.builtin.shell: "ethtool {{ item }} | grep 'Supports Wake-on' | tail -1 | awk '{print $3}'"
+  ansible.builtin.shell: |
+    set -o pipefail
+    ethtool {{ item }} | grep 'Supports Wake-on' | tail -1 | awk '{print $3}'
+  args:
+    executable: /bin/bash
+  changed_when: false
   loop: "{{ en_interfaces }}"
   register: wol_supported
-  changed_when: false
   when: en_interfaces | length > 0
 
 - name: WOL | Check if enabled
-  shell: >
+  ansible.builtin.shell: |
+    set -o pipefail
     ethtool {{ item }} | grep 'Wake-on' | tail -1 | awk '{print substr($0,length,1)}'
-  register: wol_enabled
+  args:
+    executable: /bin/bash
   changed_when: false
   failed_when: false
   loop: "{{ en_interfaces }}"
+  register: wol_enabled
   when: en_interfaces | length > 0
 
 - name: "Set Wake-on-LAN to {{ wol_mode }}"
@@ -90,7 +97,7 @@
   loop: "{{ en_interfaces }}"
   when: en_interfaces | length > 0
 
-- name: Get MAC addresses 
+- name: Get MAC addresses
   ansible.builtin.set_fact:
     wol_mac_addresses: >-
       {{ wol_mac_addresses | default([]) + [ hostvars[inventory_hostname]['ansible_' ~ item].macaddress ] }}
@@ -105,4 +112,3 @@
       Physical Interfaces: {{ en_interfaces | join(', ') }}
       WOL Mode: {{ wol_mode }}
       MAC Addresses: {{ wol_mac_addresses | join(', ') }}
-