Ansible regrex_replace to modify file name through path(url)

user_7043823 0
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I am trying to modify file name after fetching it from its path using basename in Ansible, I was successfully able to remove extension from name, but unable to achieve next target

Path: /bin/data/xyzzz_no_db_20.9.1-82.tgz

(i.e: xyzzz_no_db_20.9.1-82.tgz => xyzzzz_no_db_20.9.1-82 => xyzzz_no_db:20.9.1-82.(Final outcome expected)

Basically, need to replace last occurence of (_)(underscore) with (:)(coln), and tried same by using code mentioned below, their must be some modification required.

Thanks in Advance.

- name: Modify image name
  set_fact:
     imagename: " {{ latest_file.path | basename | regex_replace('.tgz', '') | regex_replace('/^[^_^_]*[0-9]/',':')}}"
ansible regex
1 Answers

You may actually use a single regex for that:

(.*)_(.*)\.tgz$

Replace with \1:\2. See the regex demo

In the code,

- name: Modify image name
  set_fact:
     imagename: " {{ latest_file.path | basename | regex_replace('(.*)_(.*)\\.tgz$', '\\1:\\2') }}"

Regex details

  • (.*) - Group 1 (\1): any zero or more chars other than line break chars, as many as possible
  • _ - an underscore (not captured, we'll replace it with : in the replacement pattern)
  • (.*) - Group 2 (\2): any zero or more chars other than line break chars, as many as possible
  • \.tgz - .tgz substring (note the . is escaped to match a literal . char)
  • $ - end of string.
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