# From Cosmos DB to /dev/null

### Step 1: Download dsync

Use Docker (`markadiom/dsync`) or download the latest release from the [GitHub Releases](https://github.com/adiom-data/dsync/releases/latest) page. Note that on Mac devices you may need to configure a security exception to execute the binary by following [these steps](https://support.apple.com/en-ca/guide/mac-help/mh40616/mac).

Alternatively, you can build dsync from the source code.

<pre class="language-bash"><code class="lang-bash"><strong>git clone https://github.com/adiom-data/dsync.git
</strong>cd dsync
go build
</code></pre>

{% hint style="info" %}
You can use Homebrew to easily install Dsync on your Mac:

```
brew install adiom-data/homebrew-tap/dsync
```

{% endhint %}

***

### Step 2: Start dsync

<pre class="language-bash"><code class="lang-bash"># You can use our publicly accessible (read-only) Cosmos DB instance
export COSMOS_DEMO=$(echo bW9uZ29kYjovL2Nvc21vc2RiLWRlbW8taW5zdGFuY2U6SkhiRWpRb2JkWm03YWJEcFp2UzZrWHpBMDRXNTBJd2V4QmlQYnVJWFQ2TElmNkhsV2V4YWphQzhkd042REJ2YVh6ajBnclFrdkwzY0FDRGJONjdxZWc9PUBjb3Ntb3NkYi1kZW1vLWluc3RhbmNlLm1vbmdvLmNvc21vcy5henVyZS5jb206MTAyNTUvP3NzbD10cnVlJnJlcGxpY2FTZXQ9Z2xvYmFsZGImcmV0cnl3cml0ZXM9ZmFsc2UmbWF4SWRsZVRpbWVNUz0xMjAwMDAmYXBwTmFtZT1AY29zbW9zZGItZGVtby1pbnN0YW5jZUA= | base64 --decode)

<strong># Use /dev/null as the destination
</strong>export DEST='/dev/null' 

./dsync --progress --logfile dsync.log $COSMOS_DEMO $DEST
</code></pre>

Now dsync should be running! Feel free to interrupt the sync process (via Ctrl+C) it once the initial sync is done. The demo database has a few million records and the resources are shared - allow 5-10 minutes for the process to complete.