Update Ansible PlayBook Doc

Ansible/3-PlayBook.md

@@ -1,4 +1,3 @@
-
 # Ansible Playbook Guide
 
 Ansible Playbooks are YAML files that define a series of tasks to automate server configuration, deployment, and management. This guide provides instructions on how to run a playbook and includes examples to help you get started.
@@ -162,22 +161,46 @@ This playbook demonstrates the use of conditional statements to check if a file
   when: file_output.rc != 0
 ```
 
-### Exit Codes Overview
+### Check File Existence Using the `stat` Module
 
-Understanding exit codes is crucial when dealing with shell commands:
+You can also check if a file exists using the `stat` module, which is more reliable and provides more information:
 
-| Exit Code | Description                                   |
+```yaml
-|-----------|-----------------------------------------------|
+- name: Check if File Exists
-| 0         | Success: The command completed successfully.  |
+  ansible.builtin.stat:
-| 1         | General error: Catchall for general errors.   |
+    path: /path/to/file
-| 2         | Misuse of shell builtins (e.g., `cd`).        |
+  register: file_stat
-| 126       | Command invoked cannot execute.               |
+
-| 127       | Command not found.                            |
+- name: File Exists
-| 128       | Invalid argument to exit.                     |
+  ansible.builtin.debug:
-| 130       | Script terminated by Control-C.               |
+    msg: "File exists"
-| 137       | Script terminated by `kill` (or OOM).         |
+  when: file_stat.stat.exists
-| 139       | Segmentation fault.                           |
+
-| 141       | Script terminated by `kill -13` (SIGPIPE).    |
+- name: File Does Not Exist
-| 143       | Script terminated by `kill -15` (SIGTERM).    |
+  ansible.builtin.debug:
-| 255       | Exit status out of range (exceeds 255).       |
+    msg: "File does not exist"
+  when: not file_stat.stat.exists
+```
+
+### Standalone Nginx Installation
+
+This playbook installs Nginx on both Debian-based and RedHat-based systems by detecting the operating system family:
+
+```yaml
+- name: Install Nginx
+  hosts: all
+  become: yes
+  tasks:
+    - name: Install on Debian-based systems
+      ansible.builtin.apt:
+        name: nginx
+        state: present
+      when: ansible_facts['os_family'] == "Debian"
+
+    - name: Install on RedHat-based systems
+      ansible.builtin.yum:
+        name: nginx
+        state: present
+      when: ansible_facts['os_family'] == "RedHat"
+```
 

Ansible/Additional.yaml

@@ -0,0 +1,19 @@
+### Exit Codes Overview
+
+Understanding exit codes is crucial when dealing with shell commands:
+
+| Exit Code | Description                                   |
+|-----------|-----------------------------------------------|
+| 0         | Success: The command completed successfully.  |
+| 1         | General error: Catchall for general errors.   |
+| 2         | Misuse of shell builtins (e.g., `cd`).        |
+| 126       | Command invoked cannot execute.               |
+| 127       | Command not found.                            |
+| 128       | Invalid argument to exit.                     |
+| 130       | Script terminated by Control-C.               |
+| 137       | Script terminated by `kill` (or OOM).         |
+| 139       | Segmentation fault.                           |
+| 141       | Script terminated by `kill -13` (SIGPIPE).    |
+| 143       | Script terminated by `kill -15` (SIGTERM).    |
+| 255       | Exit status out of range (exceeds 255).       |
+