Create parameters from a list of lists

Billy K

12/19/23, 9:56 PM

I have a fact, which is a list of lists, e.g. [ [disk1, filename1], [disk2, filename2], ... [diskN,filenameN] ]

I need to run a command in the format like command -x disk1,file=filename1 -x disk2,file=filename2 ... -x diskN,file=filenameN

I can't figure out how I can flatten the list and insert the option -x and file to create the string.

Any suggestion is appreciated. Thanks Billy

358

1 + 0

ansible

ansible-playbook

Score:1

Server

Vladimir Botka

12/19/23, 10:30 PM

^{Given the list
disk_file:
- [disk1, filename1]
- [disk2, filename2]
- [diskN, filenameN]}

join the items. For example,

  params: "-x {{ disk_file|map('join', ',file=')|join(' -x ') }}"

gives

  params: -x disk1,file=filename1 -x disk2,file=filename2 -x diskN,file=filenameN

^{Example of a complete playbook for testing
- hosts: localhost

vars:

disk_file:
- [disk1, filename1]
- [disk2, filename2]
- [diskN, filenameN]

params: "-x {{ disk_file|map('join', ',file=')|join(' -x ') }}"

tasks:

- debug:
var: params
- command: echo '{{ params }}'
register: out
- debug:
var: out.stdout

gives
PLAY [localhost] *****************************************************************************

TASK [debug] *********************************************************************************
ok: [localhost] =>
params: -x disk1,file=filename1 -x disk2,file=filename2 -x diskN,file=filenameN

TASK [command] *******************************************************************************
changed: [localhost]

TASK [debug] *********************************************************************************
ok: [localhost] =>
out.stdout: -x disk1,file=filename1 -x disk2,file=filename2 -x diskN,file=filenameN

PLAY RECAP ***********************************************************************************
localhost: ok=3 changed=1 unreachable=0 failed=0 skipped=0 rescued=0 ignored=0}

+ 1

Billy K

12/20/23, 2:30 AM

Actually it works fine after a quick test. Awesome.

Elon Musk

I sit in a Tesla and translated this thread with Ai:

EN: Create parameters from a list of lists

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