> For the complete documentation index, see [llms.txt](https://developer.harness.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developer.harness.io/sast-and-sca/ocular/install.md).
# Install
Ocular is installed via the Qwiet CLI. Follow these steps to get started:
### Step 1: Install the Qwiet CLI
{% tabs %}
{% tab title="Linux" %}
```
curl https://cdn.shiftleft.io/download/sl >/usr/local/bin/sl && chmod a+rx /usr/local/bin/sl
```
 
{% endtab %}
{% tab title="macOS" %}
```
curl https://cdn.shiftleft.io/download/sl >/usr/local/bin/sl && chmod a+rx /usr/local/bin/sl
```
 
{% endtab %}
{% tab title="Windows" %}
```
Invoke-WebRequest -Uri 'https://cdn.shiftleft.io/download/sl-latest-windows-x64.zip' -OutFile sl-latest-windows-x64.zip
```
 
{% endtab %}
{% endtabs %}
### Step 2: Authenticate with your Qwiet account
Create an environment variable called `SHIFTLEFT_ACCESS_TOKEN` and set its value to your access token (your access token is available in the [Dashboard](https://app.shiftleft.io/user/profile)).
Alternatively, you can run the following, which will also create a configuration file located at `.shiftleft\config.json`:
```
sl auth --org "${ORGANISATION_ID}" --token "${ACCESS_TOKEN}"
```
 
### Step 3: Download Ocular
```
sl ocular
```
 
### Step 4: Run Ocular
Use the same Qwiet CLI command to run Ocular:
```
sl ocular
```
 
note
Ocular requires Java Runtime Environment 8 (or later) to run.
If your default java is JDK8 (check with `java -version`) *and* you want to scan C code, you need to have an environment variable `JAVA_11_HOME` that points to a JDK11. Otherwise, you need to have an environment variable `JAVA_8_HOME` that points to a JDK8. In doubt, just use ocular and follow the instructions in the error messages.
Background: some components (specifically `java2cpg`) require Java 8 (exactly, not higher), while others (specifically `c2cpg`) require Java >= 9.