This is 'iw', a tool to use nl80211. To build iw, just enter 'make'. If that fails, set the PKG_CONFIG_PATH environment variable to allow the Makefile to find libnl. 'iw' is currently maintained at http://git.sipsolutions.net/iw.git/, some more documentation is available at http://wireless.kernel.org/en/users/Documentation/iw. Please send all patches to Johannes Berg <johannes@sipsolutions.net> and CC linux-wireless@vger.kernel.org for community review.