#!/bin/bash
string=`iwconfig | grep -i "wlan" | cut -f 1 -d ' '`

string=$(iwconfig | grep -i "wlan" | cut -f 1 -d ' ')
echo -e "Obtenido : ${string}";

perl -E '$s = qx|iwconfig|; $s =~ m/^(wlan0.*)/m; say $1;'

iwconfig | grep -i "wlan0" | awk '{print $1}'

iwconfig | awk '/wlan/'

#!/bin/bash
read -p "String : " string
coincidencia=`COMANDO | grep -i "${string}"`
echo -e "Lo que obtuve : [ ${coincidencia} ]";
 

#!/bin/bash
coincidencia=`who`
echo -e "Salida : [ ${coincidencia} ] ";
 

coincidencia=$(who)

coincidencia=`comando | grep -i "wlan0"`

wlan0     IEEE 802.11bgn  ESSID:"JAZZTEL_C8"
          Mode:Managed  Frequency:2.462 GHz  Access Point: 00:1A:2B:4F:45:37
          Bit Rate=1 Mb/s   Tx-Power=20 dBm
          Retry  long limit:7   RTS thr:off   Fragment thr:off
          Encryption key:4530-3031-4432-3045-3942-3943-38
          Power Management:off
          Link Quality=59/70  Signal level=-51 dBm
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:0   Missed beacon:0

salida=`perl -E '$s = qx(iwconfig) =~ m/^(wlan0.*^$)/sm; print $s;'`
echo -e "wlan0 -> ${salida}";
 

#!/bin/bash
 
devices=(
	wlan0
	mon0
	flkd5
	);
 
for device in "${devices[@]}"
do
	iwconfig | grep -i "^${device}" > /dev/null && {
		dispositivo=$device
	}
done
 
echo -e "Dispositivo detectado : $dispositivo";
 

#!/bin/bash
dispositivo=$(iwconfig | grep "^wlan0\|mon0\|flkd5" | cut -f 1 -d' ');
echo -e "Dispositivo encontrado : ${dispositivo}";
 

#!/bin/bash
dispositivo=$(iwconfig | awk '/^(wlan0|mon0|flkd5)/ {print $1}')
echo -e "Dispositivo encontrado : $dispositivo";