How can I get all BSSIDs of the iw and iwinfo commands' output? Here are iw and iwinfo commands to get all the SSIDs. iw:
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 "\" "
}
}
'
iwinfo:
iwinfo wlan0 scan | awk '
/ESSID: ".*"/ {
ORS = " "
if (!seen[$0]++) for (i = 2; i <= NF; i++) print $i
}
'
Current awk output:
"WiFi-1" "WiFi-2" "WiFi-3" "WiFi-4" "WiFi-5" ...
iw console output:
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 console output:
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)
I would like to get the following output using the awk:
"01:23:45:67:89:AB" "CD:EF:A0:A1:A2:A3" ...
What is the correct way to capture all the BSSIDs using the Awk for both libs (iw & iwinfo)?
With GNU awk for the 3rd arg to match():
{ 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
or to get the output format requested in your question:
{ 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"
With other awks you'd use substr($0,RSTART,RLENGTH) instead of a[0].