That may turn out to be too late depending on the complexity of the R.E.
It's not an error-proof approach.

Il giorno martedì 13 febbraio 2018 16:48:53 UTC, Arthur Reyes ha scritto:
>
> You should run your playbook in check mode until you're certain that your 
> regular expression is precise.
>
> On Tuesday, February 13, 2018 at 10:45:57 AM UTC-6, Nico Sabbi wrote:
>>
>> HI,
>> I need to do a grep-like search in a file without using shell commands 
>> and in a check_mode compatible way.
>> I just need to check  the presence of a given string a in a file without 
>> doing overwrites of any kind.
>> I implemented something with lineinfile but I'm very annoyed by the need 
>> to  specify the line parameter to overwrite the file
>> because the r.e. may be wrong.
>>
>> Is there any cleaner way to do what I need?
>>
>> - name: grub
>>   become: true
>>   lineinfile:
>>     path: /etc/myfile
>>     backrefs: yes 
>>     regexp: "^CMDLINE (.*)"
>>     line: 'CMDLINE \1'
>>     state: present
>>   register: myxx
>>
>>
>> Thanks.
>>
>

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