How can I execute task only when file not contain a string?

[Stéphane Klein]

Hi,

is there a solution more user friendly that http://stackoverflow.com/questions/30786263/only-check-whether-a-line-present-in-a-file-ansible to test if file contain a string?

I don't like that:

- name: Check if bash-completion in enable for root user
  command: grep -q "/etc/bash_completion" /root/.bashrc
  register: check_bashcompletion_enabled
  ignore_errors: True

- name: Enable bach-completion for root user
  command: cp /etc/skel/.bashrc /root/.bashrc
  when: check_bashcompletion_enabled.rc == 1

Do you know a better solution?

Best regards,
Stéphane

[Kai Stian Olstad]

What I would do is put the correct .bashrc in Ansible and just use the
copy module to copy it to the host(s).

--
Kai Stian Olstad

[Stéphane Klein]

Le vendredi 24 février 2017 21:26:38 UTC+1, Kai Stian Olstad a écrit :

> Do you know a better solution?

What I would do is put the correct .bashrc in Ansible and just use the
copy module to copy it to the host(s).

I would like copy only if bash_completion isn't already present in .bashrc

[Kai Stian Olstad]

Then you don't have much choice but go for the solution you posted.

But to make the output nicer I would replace "ignore_errors: True"
with

failed_when: False

or

failed_when: check_bashcompletion_enabled.rc > 1
changed_when: check_bashcompletion_enabled.rc == 1


What is it about your solution you don't like?

--
Kai Stian Olstad

[Stéphane Klein]

Yes, thank it's better.

[Matt Martz]

My preference in how to achieve this in a more ansible way, is using slurp, and then checking the returned contents:

- name: Get /root/.bashrc

  slurp:

    src:  /root/.bashrc

  register: root_bashrc

- name: Enable bash-completion for root user

  copy:

    src: /etc/skel/.bashrc

    dest: /root/.bashrc

    remote_src: true

  when: "'/etc/bash_completion' not in root_bashrc.content|b64decode"

I also replaced your command to copy the file, with the copy module, using remote_src=true

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--

Matt Martz
@sivel
sivel.net

[Brian Coca]

it might be easier with the find module

- find: paths=... contains='whatever'
register: found

- command: run if found
when: found.matched > 0


----------
Brian Coca