How to connect wireless in linux.
# chkconfig NetworkManager on [RHEL5, RHEL6]
# systemctl enable NetworkManager.service [ Fedora 17/18/19/20 ]
# service NetworkManager start [RHEL5, RHEL6]
# systemctl start NetworkManager.service [ Fedora 17/18/19/20 ]
# iwlist wlan0 scan
# iwconfig wlan0 essid yourssid key “YOURWEPKEY”
if you want to power off management of wifi card then do the following.
# iwconfig wlan0 power off
verify wifi ip by
# ifconfig -a
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