added some ansible playbooks for experiments

ansible-playbooks/README.txt

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+
+
+
+ansible-playbook add-user-group.yml --extra-vars "ansible_sudo_pass=<SUDO-PASSWORD-HERE>"
+ansible-playbook del-user-group.yml --extra-vars "ansible_sudo_pass=<SUDO-PASSWORD-HERE>"

ansible-playbooks/add-user-group.yml

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+- hosts: all
+  remote_user: hyung-hwan
+  tasks:
+    - name: add user group 'tomcat'
+      group: name=tomcat 
+      become: true
+      become_method: sudo

ansible-playbooks/del-user-group.yml

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+- hosts: all
+  remote_user: hyung-hwan
+  tasks:
+    - name: delete user group 'tomcat'
+      group: name=tomcat state=absent
+      become: true
+      become_method: sudo

ansible-playbooks/find-on-all.yml

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+- hosts: all
+  remote_user: hyung-hwan
+  tasks:
+    - name: test connection
+      find:
+         paths: /var/log
+         size: '1000000'
+         recurse: yes
+      register: out
+
+    - name: print result
+      debug: 
+        msg: "xxx: {{ item.path }}"
+      with_items: "{{ out.files }}"
+
+
+##    - debug: var=item.path
+##      with_items:  "{{ out.files }}"
+
+##    - debug: var=out.files
+

ansible-playbooks/get-m4.yml

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+- hosts: all
+  remote_user: hyung-hwan
+  tasks:
+    - name: Download GNU m4-1.14-19
+      get_url: 
+         url=https://ftp.gnu.org/gnu/m4/m4-1.4.19.tar.gz
+         dest=/tmp/m4-1.14-19.tar.gz force=no
+
+    - name: Untar m4
+      unarchive: 
+         src: /tmp/m4-1.14-19.tar.gz
+         dest: /tmp/
+         remote_src: yes
+
+    - name: Delete the m4 file downloaded
+      file: 
+         path=/tmp/m4-1.14-19.tar.gz
+         state=absent
+ 
+    - name: Delete the m4 directory
+      file: 
+         path=/tmp/m4-1.4.19/
+         state=absent

ansible-playbooks/ls-on-all.yml

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+- hosts: all
+  remote_user: hyung-hwan
+  tasks:
+    - name: run ls
+      shell: ls -laF /etc
+      register: out
+
+#    - name: print result
+#      debug: 
+#        msg: "xxx: {{ out.stdout }}"
+
+
+    - name: print result
+      debug: 
+        msg: "xxx: {{ item }}"
+      loop:  "{{ out.stdout_lines }}"
+ 

ansible-playbooks/ping-on-all.yml

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+- hosts: all
+  remote_user: hyung-hwan
+  tasks:
+    - name: test connection
+      ping:
+