description: Download and set up the `pinniped` command-line tool on macOS, Linux, or Windows clients.
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name: Install CLI
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The `pinniped` command-line tool is used to generate Pinniped-compatible kubeconfig files, and is also an important part of the Pinniped-based login flow.
It must be installed by administrators setting up a Pinniped cluster as well as by users accessing a Pinniped-enabled cluster.
## Install using Homebrew on macOS or Linux
Use [Homebrew](https://brew.sh/) to install from the Pinniped [tap](https://github.com/vmware-tanzu/homebrew-pinniped):
Find the appropriate binary for your platform from the [latest release](https://github.com/vmware-tanzu/pinniped/releases/latest):
{{<buttonlinkhref="https://get.pinniped.dev/latest/pinniped-cli-darwin-amd64">}}Download for macOS/amd64{{<buttonicon"download.png">}}{{</buttonlink>}}
{{<buttonlinkhref="https://get.pinniped.dev/latest/pinniped-cli-linux-amd64">}}Download for Linux/amd64{{<buttonicon"download.png">}}{{</buttonlink>}}
{{<buttonlinkhref="https://get.pinniped.dev/latest/pinniped-cli-windows-amd64.exe">}}Download for Windows/amd64{{<buttonicon"download.png">}}{{</buttonlink>}}
You should put the command-line tool somewhere on your `$PATH`, such as `/usr/local/bin` on macOS/Linux.
You'll also need to mark the file as executable.
To find specific versions or view all available platforms and architectures, visit the [releases page](https://github.com/vmware-tanzu/pinniped/releases/).
### Gatekeeper
If you are using macOS, you may get an error dialog when you first run `pinniped` that says `“pinniped” cannot be opened because the developer cannotbe verified`.
Cancel this dialog, open System Preferences, click Security & Privacy, and click the Allow Anyway button next to the Pinniped message.
Run the command again and another dialog appears saying `macOS cannot verify the developer of “pinniped”. Are you sure you want to open it?`.
