ubuntu下wifi连接无线路由的脚本

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！

[email protected]:~$ 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。

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