Just select the wifi you want to crack, and the tool will:
npm install aircrack-tool
Install aircrack-ng (the commands must be on the path).
apt-get install aircrack-ng
Usage: airtool flags <command> Flags: -i interface: interface on which activate airmon (default wlan0) -d, --deauth: enables active attack: deauthenticate clients to force a new handshake Commands: --reset: to use in case of errors/interruption of the process, removes monitor interfaces and (re)starts the network-manager --help: display this help