Provisioning scripts: auto-execute certain common scripts in all configurations

I would like to auto-execute all scripts under the "auto" subdirectory of a "common" directory, for the respective platform. For example

• On Linux, execute all +x (executable) files under "common/linux/auto" and "common/unix/auto".

Including the template-named directory, the question is in what order to execute all of them. I can see the following alternatives:

• Alphabetical (doesn't make much sense IMO)
• From most generic to most specific. E.g. "common/unix/auto", "common/linux/auto", "templateNamedDir"
  • I think that's the best one, so that we can later handle issues not resolved generically.
• From most specific to most generic.
• Configurable somehow but with a sane default.

P.S. The scripts inside these dirs should be executed in alphabetical order, as happens currently.