# How to Fix "frida-ps: command not found" Error on [macOS]

If you've recently installed Frida tools on your Mac and encountered the following error when running `frida-ps -Ua`:

```plaintext
-bash: frida-ps: command not found
```

Don't worry! This common issue occurs because the Frida tools are installed in a local Python directory that's not yet added to your system's PATH. Here's a quick step-by-step guide on how to fix it.

---

## Step 1: Verify Frida Tools Installation

First, ensure that Frida tools are installed correctly. Run this command in your terminal:

```bash
pip3 install frida-tools
```

If you see output similar to this:

```plaintext
Requirement already satisfied: frida-tools in ./Library/Python/3.9/lib/python/site-packages (13.6.1)
```

This means Frida tools are already installed.

---

## Step 2: Locate the Python User Scripts Directory

Next, find out where Python installed the scripts by running:

```bash
python3 -m site --user-base
```

You should see output like this:

```plaintext
/Users/your_username/Library/Python/3.9
```

The scripts (including `frida-ps`) are typically stored inside a `bin` folder under this directory:

```plaintext
/Users/your_username/Library/Python/3.9/bin
```

---

## Step 3: Add the Directory to Your PATH

To make sure your system recognizes the `frida-ps` command, add this directory to your PATH environment variable.

Open your shell configuration file (`~/.bash_profile`, `~/.zshrc`, or `~/.bashrc`) and add this line at the end:

```bash
export PATH=$PATH:/Users/your_username/Library/Python/3.9/bin
```

Replace `your_username` with your actual Mac username.

Save and close the file.

---

## Step 4: Reload Your Shell Configuration

To apply changes immediately, run:

```bash
source ~/.bash_profile  # or ~/.zshrc depending on your shell
```

---

## Step 5: Verify That It Worked!

Now run this command again:

```bash
frida-ps -Ua
```

If everything worked correctly, you should now see a list of processes or applications without any errors!

---

## Screenshots of the Error and Fix

**Error Screenshot (Before Fix):**

```plaintext
Mac:~ user$ frida-ps -Ua
-bash: frida-ps: command not found
```

**Correct Output (After Fix):**

```plaintext
Mac:~ user$ frida-ps -Ua
 PID  Name
----  -------------------------
1234  Safari
5678  Mail
...
```

---

That's it! You've successfully resolved the "frida-ps command not found" error on macOS.