For UNIX systems (Mac and Linux), the installer is a shell script.
It downloads the CLI wrapper, puts it in ~/bin and makes it executable.
It also attempts to install external dependencies needed by the CLI like
dfu-util using the appropriate package manager for the platform.
This CLI installer is documented to be used as:
bash <( curl -sL https://particle.io/install-cli )
To use the beta version, run:
CHANNEL=beta bash <( curl -sL https://particle.io/install-cli )