On Thursday, January 26, 2017 at 7:59:34 AM UTC-8, Jinesh Choksi wrote:
>
> Hi Mark,
>
> I found the following
> https://relativkreativ.at/articles/how-to-use-ansibles-lineinfile-module-in-a-bulletproof-way
>
> very useful when I needed to find a reliable way to edit lines in a
> configuration file with Ansible tasks.
>
> See if it helps you understand how to use lineinfile in a bulletproof way.
>
> Regards,
> Jinesh
>
Your article had interesting information, but it doesn't look like it
will help. I tried using negative look-ahead, but got nowhere with it.
Now I am trying to use egrep to scan the file, and then use lineinfile
to act upon the results. I put together the below snippet for testing:
- shell: chdir=~/tmp egrep "^.*\s*{{item}}\s+.*$" mytestfile
register: result
changed_when: false
failed_when: false
with_items:
- "string2"
- "string6"
- "string7"
- debug: var={{item}}
with_items:
- result
This returns the following:
TASK [debug]
*******************************************************************
ok: [localhost] => (item=result) => {
"item": "result",
"result": {
"changed": false,
"msg": "All items completed",
"results": [
{
"_ansible_item_result": true,
"_ansible_no_log": false,
"_ansible_parsed": true,
"changed": false,
"cmd": "egrep \"^.*\\s*string2\\s+.*$\" mytestfile",
"delta": "0:00:00.003006",
"end": "2017-01-26 22:33:27.722164",
"failed": false,
"failed_when_result": false,
"invocation": {
"module_args": {
"_raw_params": "egrep \"^.*\\s*string2\\s+.*$\"
mytestfile",
"_uses_shell": true,
"chdir": "/home/pdxmft/tmp",
"creates": null,
"executable": null,
"removes": null,
"warn": true
},
"module_name": "command"
},
"item": "string2",
"rc": 0,
"start": "2017-01-26 22:33:27.719158",
"stderr": "",
"stdout": "string1 string2 string3",
"stdout_lines": [
"string1 string2 string3"
],
"warnings": []
},
{
"_ansible_item_result": true,
"_ansible_no_log": false,
"_ansible_parsed": true,
"changed": false,
"cmd": "egrep \"^.*\\s*string6\\s+.*$\" mytestfile",
"delta": "0:00:00.003093",
"end": "2017-01-26 22:33:27.837867",
"failed": false,
"failed_when_result": false,
"invocation": {
"module_args": {
"_raw_params": "egrep \"^.*\\s*string6\\s+.*$\"
mytestfile",
"_uses_shell": true,
"chdir": "/home/pdxmft/tmp",
"creates": null,
"executable": null,
"removes": null,
"warn": true
},
"module_name": "command"
},
"item": "string6",
"rc": 1,
"start": "2017-01-26 22:33:27.834774",
"stderr": "",
"stdout": "",
"stdout_lines": [],
"warnings": []
},
{
"_ansible_item_result": true,
"_ansible_no_log": false,
"_ansible_parsed": true,
"changed": false,
"cmd": "egrep \"^.*\\s*string7\\s+.*$\" mytestfile",
"delta": "0:00:00.002986",
"end": "2017-01-26 22:33:27.951455",
"failed": false,
"failed_when_result": false,
"invocation": {
"module_args": {
"_raw_params": "egrep \"^.*\\s*string7\\s+.*$\"
mytestfile",
"_uses_shell": true,
"chdir": "/home/pdxmft/tmp",
"creates": null,
"executable": null,
"removes": null,
"warn": true
},
"module_name": "command"
},
"item": "string7",
"rc": 0,
"start": "2017-01-26 22:33:27.948469",
"stderr": "",
"stdout": "string7 string8 string9",
"stdout_lines": [
"string7 string8 string9"
],
"warnings": []
}
]
}
}
What I would like to do now is walk through the results[] list and
extract the "rc" and "item" values, something along the line of this:
- debug: var={{item.rc}}
with_items:
- result.results[*]
But of course that does not work. So how can I walk through a list in
this manner? I looked at 'with_subelements' but was unable to put
something together there.
-Mark
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