append users to another group

[Marc Roelofs]

I am trying to figure out how to generate a list of users on a remote machine who are currently already a member of group A , and append them all to group B 

Is this possible ? 

Could not find a way to lookup existing users that are already a member of a group . I would like to be able to do this on different machines which have different users available , so creating a  list of users on my ansible management station and using it as input  is not an option 

Please advice 

Best Marc 

[Matt Martz]

You can retrieve members of a group using the `getent` module:  http://docs.ansible.com/ansible/getent_module.html

Such as:

- getent: database=group split=':' key=sudo

  register: sudo_users

- debug: var=sudo_users.getent_group.sudo[3]

The output should be a comma separated list.  You could make this an actual python list using `sudo_users.getent_group.sudo[3].split(',')`

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Matt Martz
@sivel
sivel.net