The command "airport --scan" is used on a macOS operating system to scan for available Wi-Fi networks in the vicinity.
When you execute this command in the Terminal on macOS, the "airport" utility is called with the "--scan" option. The "airport" utility is a command-line tool provided by Apple that allows users to interact with wireless networks and various Wi-Fi features.
The "--scan" option specifically instructs the "airport" utility to perform a scan of the surrounding area and gather information about nearby Wi-Fi networks. This command will display a list of available Wi-Fi networks along with their corresponding details such as network name (SSID), signal strength, security type, and MAC address.
By using this command, you can obtain a comprehensive view of the Wi-Fi networks available around you. It can be useful for troubleshooting network issues, finding the strongest signal, or identifying unauthorized or unfamiliar networks.