How to use AWK command via Ansible

Question

I have a problem with creating ansible role.

I want to register variable via Ansible using awk in shell module.

It work when i use it via terminal like that:

inxi -D | awk '/Total Size:/ {print $7}' | cut -d"(" -f2

But when I want to use it in Ansible role it doesnt work.

name: Get info
shell: inxi -D | awk '/Total Size:/ {print $7}' | cut -d"(" -f2
register: result

Displayed info from inxi -D is

Drives:    HDD Total Size: 53.7GB (2.0% used)
           ID-1: /dev/vda model: N/A size: 53.7GB
           ID-2: /dev/vdb model: N/A size: 0.0GB

And I want to extract data about usage fo HDD e.g. 2.0%

Can someone help with that?

Solution 1

This way it works fine

 - name: Get informations about disk percentage
      shell: >
                inxi -D |
                grep 'Total'|
                sed -e 's/.*(\(.*\)\ .*/\1/'
      register: result

- debug:
      msg: "{{ result.stdout }}"

Solution 2

Give a try to this:

---
- hosts: localhost
  connection: local

  tasks:
  - name: test shell
    shell: >
      echo "Drives:    HDD Total Size: 53.7GB (2.0% used)" | awk -F '[()]' '/Total Size:/ {split($2,a," "); print a[1]}'
    register: result

  - debug:
      msg: "{{ result.stdout }}"

It should print something like:

"msg": "2.0%"

If working then just replace the echo ... with your command: inxi -D | awk ...

Notice the shell: >

In yaml, Multiple-line strings can be written either as a 'literal block' (using |), or a 'folded block' (using >).

Also changed the use of awk to use all in one by using [()] as the separator, this will get contents within parentheses.

Comments

[Admin]

what output you got for inxi -D | awk '/Total Size:/ {print $7}' | cut -d"(" -f2 ?

[Dominik]

2.0% from line Drives: HDD Total Size: 53.7GB (2.0% used) ID-1: /dev/vda model: N/A size: 53.7GB ` ID-2: /dev/vdb model: N/A size: 0.0GB `

[ghoti]

Can you add the output of just inxi -D to your question, so that it (1) retains proper formatting and (2) allows us to suggest a better way to do this?

[tripleee]

echo $(command) is a useless use of echo and should simply be command.

[Dominik]

@ghoti I have add info

[Paul Samsotha]

Not sure if this is the same problem, but I was trying to run a shell command and I just had to escape the \$.

[Dominik]

I have tried that and it doesnt work. changed: [168.99.241.225] => {"changed": true, "cmd": "inxi -D | awk '/Total Size:/ {print $7}' | cut -d\"(\" -f2", "delta": "0:00:00.197516", "end": "2018-05-20 17:38:12.433230", "rc": 0, "start": "2018-05-20 17:38:12.235714", "stderr": "", "stderr_lines": [], "stdout": "", "stdout_lines": []}

[ghoti]

That grep is entirely unnecessary; the same filtering can be done in sed alone. What about just inxi -D | sed -ne '/^Drives/{s/.*(//;s/ .*//;p;q;}' ?