主要是使用命令行下，控制wifi接口连接无线路由器，写了一个简单的脚本，仅供参考！
leekwen@print:~$ cat wifi-link.sh
#!/bin/sh
#
# author leekwen
#
read -p "Enter Wifi SSID Name: " ssid
echo "\n \033[32m The WIFI SSID is $ssid. \033[0m \n"
read -p "Enter the password of SSID:" password
echo "\n \033[32m The Password is $password \033[0m\n"
wpa_passphrase $ssid $password > /etc/wpa_supplicant.conf
wpa=`ps -ef |grep wpa_supplicant|grep -v "grep" |wc -l`
dhc=`ps -ef |grep "dhclient wlan0" |grep -v "grep" |wc -l`
#echo "dhclient is $dhc "
pid=`pgrep wpa_supplicant`
cid=`ps -ef |grep "dhclient wlan0" |grep -v "grep" |awk '{print $2}'`
#echo $cid
if [ $wpa -eq 0 ]; then
echo " process is none "
wpa_supplicant -B -Dwext -iwlan0 -c /etc/wpa_supplicant.conf &
if [ $cid -eq 0 ]; then
dhclient wlan0 &
else
kill $cid
sleep 1;
dhclient wlan0 &
fi
else
echo "\n \033[31m The process is exists...... \033[0m \n"
#echo $pid
kill $pid &
sleep 1
echo "\n \033[31m The interface will restart...... \033[0m \n"
wpa_supplicant -B -Dwext -iwlan0 -c /etc/wpa_supplicant.conf &
if [ $cid -eq 0 ]; then
dhclient wlan0 &
else
kill $cid
sleep 1;
dhclient wlan0 &
fi
fi
根据提示输入wifi的SSID名称及密码后，WIFI接口会自动重启，并从路由上动态获取IP地址。
如果wifi的接口名非wlan0，请自行修改此脚本，以方便自己能够正常使用。