Open or not open, that is the stupid question.

#!/bin/bash iwlist wlan0 scanning | grep Channel: | grep -v grep | cut -d: -f2 | sort Wish this helps. regards, Stanley Huang

Once you upgrade Ubuntu from 10.04 to 11.04, and you will find out the network-manager won't manage wireless any more. But you still could change NetworkManager.conf to enable it. # sudo vi /etc/NetworkManager/NetworkManager.conf and change "managed" attribute from "false" to “true“ and restart it. # sudo /etc/init.d/network-manager restart Wish this helps. regards, Stanley Huang

How to connect wireless ap by command in Ubuntu? You can use two commands, 'iwlist', 'iwconfig'. # iwlist --help Usage: iwlist [interface] scanning [essid NNN] [last] [interface] frequency [interface] channel [interface] bitrate [interface] rate [interface] encryption [interface] keys [interface] power [interface] txpower [interface] retry [interface] ap [interface] accesspoints [interface] peers [interface] event [interface] auth [interface] wpakeys [interface] genie [interface] modulation # iwlist wlan0 scanning essid ap_name # iwconfig --help Usage: iwconfig [interface] interface essid {NNN|any|on|off} interface mode {managed|ad-hoc|master|...} interface freq N.NNN[k|...

How to setup your wireless interface to auto connect to ap in Ubuntu? You can set the config in /etc/network/interface like below: wlan0 auto iface wlan0 inet dhcp wireless-essid your_essid wireless-key your_essid_passphrase wireless-channel your_essid_channel Wish this helps. regards, Stanley Huang