contents in all files not parse using grep in ansible - ansible

Question

I am looking to parse the lines contain word "harddisk" in two different files such as file1.txt and file2.txt.
with below ansible command am able to get only contents in file2.txt. kindly advise.
---
- name: find file name with .txt extension
shell: find /root -name "file*.txt" -print
register: "files"
- debug:
var: files
- name: find word harddisk in the file contents and output to result.txt in the destination server.
shell: cat "{{ item }}" |grep -i 'harddisk' > /root/test/result.txt
with_items:
- "{{ files.stdout_lines }}"
args:
executable: /bin/bash
register: output

Answer 1

Given the list of files
my_files:
- file1.txt
- file2.txt
and the content
shell> cat file1.txt
foo
harddisk A
harddisk B
bar
shell> cat file2.txt
foo
harddisk C
harddisk D
bar
The task below grep the lines from the files
- shell: "cat {{ item }} | grep harddisk"
register: files
loop: "{{ my_files }}"
Then, the task below creates the list of the lines
- set_fact:
my_list: "{{ files.results|
map(attribute='stdout_lines')|
list|flatten }}"
- debug:
var: my_list
gives
"my_list": [
"harddisk A",
"harddisk B",
"harddisk C",
"harddisk D"
]
To keep the source of the lines, the task below creates a dictionary with the data
- set_fact:
my_dict: "{{ dict(my_files|
zip(files.results|
map(attribute='stdout_lines')|
list)) }}"
- debug:
var: my_dict
gives
"my_dict": {
"file1.txt": [
"harddisk A",
"harddisk B"
],
"file2.txt": [
"harddisk C",
"harddisk D"
]
}