# MacOS CLI Client Installation

### Step 1: Download the Installer

```bash
curl -L https://github.com/atsign-foundation/noports/releases/latest/download/universal.sh -o universal.sh
```

To check if the installation downloaded correctly:

```bash
stat universal.sh
```

### Step 2: Run the Installer

Make the script executable and run the script.

```bash
chmod u+x universal.sh
./universal.sh
```

### Step 3: Activate your client atSign

{% hint style="warning" %}
If you've activated your **client** atSign on another device already, this step will not work. Instead, follow this guide: [Reuse your client atSign on another machine](/installation-faq/reuse-your-client-atsign-on-another-machine.md)
{% endhint %}

This command activates your atSign and prompts you to enter an OTP. This is only done during the setup of a brand new atsign.

```
~/.local/bin/at_activate -a @<REPLACE>_client
```

#### Enter the One Time Password (OTP) & Check your SPAM/PROMOTIONS folders

at\_activate will pause and wait for the input of a one time pin (OTP) sent to your email or phone number.\
\
Once activated, the master keys will save at `~/.atsign/keys`.


---

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