Execute a custom shell script before the aegir verify Every actions in aegir trigger a verify.

I would like to automatically execute a shell script before that verify (rsync of plateforms).

How could I proceed ?
You could implement a drush_hook_pre_COMMAND() hook in drush to run any code you'd like.

See the docs page for more details: https://docs.aegirproject.org/extend/altering-behaviours/#running-extra-code-after-a-task