linux - 获取所有WiFi的SSID和BSSID

如何获取iw和iwinfo命令输出的所有bssid？这里有iw和iwinfo命令来获取所有ssid。内华达州：

iw dev wlan0 scan 2>/dev/null | awk '
/SSID: / {
  if (!seen[$0]++) {
    printf "\""
    for (i = 2; i <= NF; i++) if (i == 2) printf $i
    else printf " " $i
    printf "\" "
  }
}
'

信息：

iwinfo wlan0 scan | awk '
/ESSID: ".*"/ {
  ORS = " "
  if (!seen[$0]++) for (i = 2; i <= NF; i++) print $i
}
'

电流AWK输出：
“WiFi-1”“WiFi-2”“WiFi-3”“WiFi-4”“WiFi-5”…
IW控制台输出：

BSS 01:23:45:67:89:AB(on wlan0)
        TSF: 128785915910 usec (1d, 11:46:25)
        freq: 2437
        beacon interval: 200 TUs
        capability: ESS ShortPreamble ShortSlotTime (0x0421)
        signal: -71.00 dBm
        last seen: 990 ms ago
        Information elements from Probe Response frame:
        SSID: WiFi-1
        Supported rates: 1.0* 2.0* 5.5* 6.0 9.0 11.0* 12.0 18.0
        DS Parameter set: channel 6
        Country: SK     Environment: Indoor/Outdoor
                Channels [1 - 13] @ 20 dBm
        ERP: <no flags>
        Extended supported rates: 24.0 36.0 48.0 54.0
        WMM:     * Parameter version 1
                 * BE: CW 15-1023, AIFSN 3
                 * BK: CW 15-1023, AIFSN 7
                 * VI: CW 7-15, AIFSN 2, TXOP 3008 usec
                 * VO: CW 3-7, AIFSN 2, TXOP 1504 usec
BSS CD:EF:A0:A1:A2:A3(on wlan0)
        TSF: 2381690679244 usec (27d, 13:34:50)
        freq: 2467
        beacon interval: 200 TUs
        capability: ESS ShortPreamble ShortSlotTime (0x0421)
        signal: -94.00 dBm
        last seen: 90 ms ago
        Information elements from Probe Response frame:
        SSID: WiFi-2
        Supported rates: 1.0* 2.0* 5.5* 6.0 9.0 11.0* 12.0 18.0
        DS Parameter set: channel 12
        Country: SK     Environment: Indoor/Outdoor
                Channels [1 - 13] @ 20 dBm
        ERP: <no flags>
        Extended supported rates: 24.0 36.0 48.0 54.0
        WMM:     * Parameter version 1
                 * BE: CW 15-1023, AIFSN 3
                 * BK: CW 15-1023, AIFSN 7
                 * VI: CW 7-15, AIFSN 2, TXOP 3008 usec
                 * VO: CW 3-7, AIFSN 2, TXOP 1504 usec

iwinfo控制台输出：

Cell 01 - Address: 01:23:45:67:89:AB
          ESSID: "WiFi-1"
          Mode: Master  Channel: 11
          Signal: -49 dBm  Quality: 61/70
          Encryption: WPA2 PSK (CCMP)

Cell 02 - Address: CD:EF:A0:A1:A2:A3
          ESSID: "WiFi-2"
          Mode: Master  Channel: 11
          Signal: -53 dBm  Quality: 57/70
          Encryption: WPA2 PSK (CCMP)

我想使用awk获得以下输出：
“01:23:45:67:89:ab”“cd:ef:a0:a1:a2:a3”…
使用awk为两个lib（iw&iwinfo）捕获所有bssid的正确方法是什么？

最佳答案

使用gnu awk使第三个参数匹配（）：

{ cat iw_output; cat iwinfo_output; } |
awk 'match($0,/([[:xdigit:]]{1,2}:){5}[[:xdigit:]]{1,2}/,a) && !seen[a[0]]++{print a[0]}'
01:23:45:67:89:AB
CD:EF:A0:A1:A2:A3

或者获取问题中请求的输出格式：

{ cat iw_output; cat iwinfo_output; } |
awk 'match($0,/([[:xdigit:]]{1,2}:){5}[[:xdigit:]]{1,2}/,a) && !seen[a[0]]++{printf "%s\"%s\"", (c++?OFS:""), a[0]} END{print ""}'
"01:23:45:67:89:AB" "CD:EF:A0:A1:A2:A3"

对于其他awk，您将使用substr($0,RSTART,RLENGTH)而不是a[0]。

关于linux - 获取所有WiFi的SSID和BSSID，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/41579598/