在检测到wifi网络时发出警报？

debugcn 发表于 Dev

塔伦

当检测到wifi（无线）网络时，有什么方法可以播放声音以提醒我？

拉杜·拉迪亚努（RaduRădeanu）

问题是，据我所知，没有特定的程序/服务/守护程序来检查何时新的无线网络出现在/从无线天线的范围出现/消失（实际上有airodump-ng，也许还有其他，但这是冲突的）使用网络管理器）。

或者，您可以使用工具不时扫描wifi网络iwlist。

注意： “测试中”iwlist工具仅适用于Atheros，Intel或Broadcom卡。

话虽这么说，以下脚本可以完成您想要的操作（我将其命名为wifidetect）：

#!/bin/bash

#wifidetect - Alert when new wireless 

#Licensed under the standard MIT license:
#Copyright 2013 Radu Rădeanu (http://askubuntu.com/users/147044/).
#Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
#The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
#THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE

DISPLAY=:0.0
#change 'username' with your username
HOME=/home/username/
XAUTHORITY=$HOME/.Xauthority
export DISPLAY XAUTHORITY HOME

#check if you run the script as root
if [ "$(whoami)" != "root" ]; then
    notify-send -i error "You must to run $(basename $0) script as root."
    echo "You must to run $(basename $0) script as root."
    exit
fi

#check if beep is installed
if [ ! -n "$(dpkg -s beep 2>/dev/null | grep 'Status: install ok installed')" ]; then
    notify-send -i error "The package 'beep' must to be installed before to run $(basename $0)." "Use 'sudo apt-get install beep' command in terminal to install it."
    echo -e "The package 'beep' must to be installed before to run $(basename $0)\nUse 'sudo apt-get install beep' command in terminal to install it."
    exit
fi

[ -f /tmp/networks ] || > /tmp/networks

#scan for networks - need root privileges
#change 'wlan0' with your interface name of your wireless network card; you can find it using 'ls /sys/class/net' command
sudo iwlist wlan0 scan | grep -E "Address|ESSID" |  awk 'BEGIN {FS=": |\""} {print $2}' | sed 'N;s/\n/ /' | sort > /tmp/new_networks

#check if there are new networks
new_networks=$(comm -1 -3 /tmp/networks /tmp/new_networks)
new_essids=$(echo $new_networks | sed "s/..:..:..:..:..:..//g" | sed "s/  /, /g")

if [ -n "$new_networks" ]; then   #if there are new networks
    #send a graphical notification
    notify-send -i /usr/share/app-install/icons/wifi-radar.svg "New network(s) detected:" "$new_essids"
    #send a sound notification
    pcspkr_on=$(lsmod | grep pcspkr)
    if [ -n "$pcspkr_on" ]; then 
        beep
    else 
        sudo modprobe pcspkr
        beep
        sudo modprobe -r pcspkr
    fi

    #change the old list of networks with the list containing new networks
    #the networks that were detected in the previous scan and wern't detected this time will be removed from the list
    cat /tmp/new_networks > /tmp/networks

    #if you want that only the new networks detected (who were not detected in previous scans) to be added to list, comment the previous line and and uncomment the following three
    #cat /tmp/networks > /tmp/tmp_networks
    #cat /tmp/new_networks >> /tmp/tmp_networks
    #cat /tmp/tmp_networks | sort | uniq > /tmp/networks
fi