bbqwifi script by liknites

#!/bin/sh
echo
echo "#    #               # ## # "
echo "#    #                 #    "
echo "#### #### #### # # # # ## # "
echo "#  # #  # #  # # # # # #  # "
echo "#### #### #### ##### # #  # "
echo "             #              "
echo "             #              "
echo "........................... "
echo
CONF=/etc/wpa_supplicant.conf
if ( pgrep dhclient ) > /dev/null 2>&1
   then
      kill "$( pgrep dhclient )"
fi
if ( pgrep wpa_supplicant ) > /dev/null 2>&1
   then
      kill "$( pgrep wpa_supplicant )"
fi
echo "Available devices:"
echo
ip link | awk '/</ {print $2 | "tr -d :"}'
echo
printf "Interface: "; read FACE
ip link set "$FACE" down > /dev/null 2>&1
if [ $? -eq 1 ]
   then
      echo
          echo "Device '$FACE' not found, exiting..."
      echo
      exit
fi
ip link set "$FACE" up
echo
if [ -e /etc/wpa_supplicant.conf ]; then
   echo "Previous configuration found:"
   echo
   awk '/"/' /etc/wpa_supplicant.conf
   echo
   printf "Use the above (y/n)? "; read ANSWER
   echo
   if echo "$ANSWER" | grep -iq "^y"
   then
      wpa_supplicant -i "$FACE" -B -Dwext,nl80211 -c "$CONF" > /dev/null 2>&1
      dhclient "$FACE" > /dev/null 2>&1
      exit
   fi
fi
echo "Scanning for networks..."
iwlist "$FACE" scan | awk -F '"' '/ESSID/ {print $2 | "sort -u"}' 2> /dev/null
echo
printf "Network: "; read NAME
iwconfig "$FACE" essid "$NAME" > /dev/null 2>&1
echo
stty -echo
printf "Password: "; read PASS
stty echo
echo
if [ -z "$PASSWORD" ]; then
   ip link set "$FACE" up
   echo "Connecting to the network..."
   echo
   iwconfig "$FACE" essid "$NAME" > /dev/null 2>&1
   dhclient "$FACE" > /dev/null 2>&1
   exit
fi
echo
echo "Writing configuration file..."
cat <<EOT > "$CONF"
# WPA-PSK/TKIP
update_config=1
ctrl_interface=/var/run/wpa_supplicant

network={
   ssid="$NAME"
   psk="$PASS"
}
EOT
echo "Starting wpa_supplicant..."
wpa_supplicant -i "$FACE" -B -Dwext,nl80211 -c "$CONF" > /dev/null 2>&1
echo "Connecting to the network..."
echo
dhclient "$FACE" > /dev/null 2>&1
exit