title: How to use findstr to get MAC address?
body: <p>I send <code>adb shell dumpsys wifi</code> to get current available wifi ap BSSID(MAC address).The result as follows:
  Latest scan results:</p>
  
  <pre><code>    BSSID              Frequency  RSSI    Age      SSID                                 Flags
  
    7c:7d:3d:c3:4c:e0       2422    -40    6.716    HUAWEI-YJDAD5                     [WPA2-PSK-CCMP][ESS]
  
    d4:ee:07:26:24:18       2432    -50    6.716    HiWiFi_Refine                     [WPA-PSK-CCMP][WPA2-PSK-CCMP][ESS]
  
    24:09:95:55:54:20       2442    -52    6.716    HUAWEI-5420                       [WPA2-PSK-CCMP][WPS][ESS]
  
    70:72:3c:97:52:b8       2437    -53    6.716    HUAWEI-H6FCXT                     [WPA-PSK-CCMP+TKIP][WPA2-PSK-CCMP+TKIP][WPS][ESS]
  
    0c:d6:bd:3d:f6:14       2417    -52    6.716    HUAWEI-DUS8FG                     [WPA-PSK-CCMP+TKIP][WPA2-PSK-CCMP+TKIP][WPS][ESS]
  
    f0:b4:29:20:21:1b       2442    -54    6.716    Xiaomi_211A11                     [WPA-PSK-CCMP+TKIP][WPA2-PSK-CCMP+TKIP][WPS][ESS]
  
    80:38:bc:05:ed:a1       2412    -58    6.716    Huawei-Employee                   [WPA2-EAP-CCMP][ESS]
  
    e0:19:1d:cc:7c:a4       2412    -57    6.715    HUAWEI-B83GL6                     [WPA-PSK-CCMP][WPA2-PSK-CCMP][WPS][ESS]
  
    18:c5:8a:17:4b:a1       2412    -60    6.715    Huawei-Employee                   [WPA2-EAP-CCMP][ESS]
  </code></pre>
  
  <p>So how to use findstr Regular Expression on Windows to collect BSSID from the result? I tried <code>adb shell dumpsys wifi | findstr /r "[0-9a-f]{2}(:[0-9a-f]{2}){5}"</code> but get nothing </p>