I'd say a file that you can open with a simple text editor is convenient, so it can be a simple .conf/.ini, more complex are .xml/.yaml that you can still edit in vim/nano but can be cumbersome.
But as others say, it all depends on your app...
I'd say a file that you can open with a simple text editor is convenient, so it can be a simple .conf/.ini, more complex are .xml/.yaml that you can still edit in vim/nano but can be cumbersome.
But as others say, it all depends on your app...