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#!/bin/bash
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#
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# Show noise and signal levels of wifi enabled devices.
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# Author: Nicolai Langfeldt, janl@linprolno
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# Modifications: Sebastián Cruz, crux@lugmen.org.ar
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# License: GPL v. 2
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#
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#%# family=auto
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#%# capabilitoes=autoconf
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PNWL=/proc/net/wireless
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do_fetch () {
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awk -F'[ :]*' '/:/ {
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gsub(/\. /," ",$0); # Remove periods with no decimals after
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print $2"_noise.value "$6;
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print $2"_signal.value "$5;
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}' $PNWL
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}
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do_config () {
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echo "graph_title WiFi signal and noise"
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echo "graph_args --base 1000 -u 0"
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echo "graph_vlabel dB"
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echo "graph_category network"
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echo "graph_info This graph shows the noise and singal levels of your WiFi devices"
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awk -F'[ :]*' '/:/ {
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print $2"_noise.label Noise "$2;
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print $2"_signal.label Signal "$2;
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}' $PNWL
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}
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do_autoconf () {
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if [ ! -f $PNWL ] ; then
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echo "no (no $PNWL)"
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exit 1
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fi
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if [ ! -r $PNWL ] ; then
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echo "no (could not read $PNWL)"
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exit 1
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fi
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if grep -qs : $PNWL ; then
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echo yes
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exit 0
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fi
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echo "no (no devices in $PNWL)"
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exit 1
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}
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case $1 in
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config|autoconf)
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eval do_$1
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exit 0;;
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'')
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do_fetch
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exit 0;;
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esac
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