# Apache OpenDAL™ Rust Core Examples
Thank you for using OpenDAL!
Those examples are designed to help you to understand how to use OpenDAL Rust Core.
## Setup
All examples following the same setup steps:
To run this example, please copy the `.env.example`, which is at project root, to `.env` and change the values under each type of service on need.
Take `fs` for example, we need to change to enable behavior test on `fs` on `/tmp`.
```dotenv
OPENDAL_FS_ROOT=/path/to/dir
OPENDAL_FS_ATOMIC_WRITE_DIR=/path/to/dir
```
into
```dotenv
OPENDAL_FS_ROOT=/tmp/
OPENDAL_FS_ATOMIC_WRITE_DIR=/tmp/
```