AUR Byobu wifi_quality

#!/bin/sh -e
#
#    wifi_quality: display wifi signal quality
#    Copyright (C) 2008 Canonical Ltd.
#
#    Authors: Dustin Kirkland <kirkland@canonical.com>
#
#    This program is free software: you can redistribute it and/or modify
#    it under the terms of the GNU General Public License as published by
#    the Free Software Foundation, version 3 of the License.
#
#    This program is distributed in the hope that it will be useful,
#    but WITHOUT ANY WARRANTY; without even the implied warranty of
#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#    GNU General Public License for more details.
#
#    You should have received a copy of the GNU General Public License
#    along with this program.  If not, see <http://www.gnu.org/licenses/>.

PKG="byobu"
color 2>/dev/null || color() { true; }

if [ "$1" = "--detail" ]; then
        /usr/sbin/iwconfig 2>/dev/null
        exit 0
fi

iwconfig=`/usr/sbin/iwconfig 2>/dev/null`
bitrate=`echo "$iwconfig" | grep "Bit Rate." | sed -e "s/^.*Bit Rate.//" -e "s/ .*$//g"`
[ -z "$bitrate" ] && exit 0
quality=`echo "$iwconfig" | grep "Link Quality." | sed -e "s/^.*Link Quality.//" -e "s/ .*$//g" | awk -F/ '{printf "%.0f", 100*$1/$2}'`
if [ "$bitrate" != "1" ]; then
        printf "$(color b C k)%s$(color -)$(color C k)%s,$(color -)$(color b C k)%s$(color -)$(color C k)%%$(color -) " "$bitrate" "Mbps" "$quality"
fi