centos 命令行连接无线网卡

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ifconfig wlan0 up

1	`ifconfig` `wlan0`

iwlist wlan0 scan

wpa_passphrase naizhongnai naizhong >> /etc/wpa_supplicant/wpa_supplicant.conf

很奇怪，将wpa_supplicant的配置文件中wpa_supplicant.conf中的：
ctrl_interface=/var/run/wpa_supplicant
注释掉，竟然没有上面所说的错误了

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ifconfig wlan0 up

service NetworkManager stop

service network restart

1	`wpa_supplicant -i wlan0 -c` `/etc/wpa_supplicant/wpa_supplicant` `.conf -D wext -B`

iwconfig

dhclient wlan0

ping baidu.com

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清理内存

echo 1 > /proc/sys/vm/drop_caches