Is is possible to replace default working directory with user defined directory at once for all apps?
I found OOD_DATAROOT in /etc/ood/config/apps/app_name/env. But it’s global configuration for every user. Is there a way to define working directory by user?
No, this is not a feature in Open OnDemand. You could always have the environment variable set on login for a user by using a bashrc or profile to just set that environment variable as you want with $USER in the path.