Wireless tools for Linux is a package maintained by Jean Tourrilhes to facilitate the manipulation of the Linux Wireless Extension. It is a set of simple text-based tools intended to support the full wireless extension[1]. In many GNU/Linux distributions, this package is included by default, or based on whether a wireless card is present. If it is not automatically installed by the distribution, it is usually easy to find in binary form.
Each wireless adapter on your system has an "interface name" like "eth1" or "wlan0". One can see these by running 'iwconfig' from a terminal.