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#!/bin/bash
if [[ $# -ne 1 ]]
then
echo "Reads the sensor.dat and distance.dat from a running Pasad"
echo "instance and draws a graph from them."
echo
echo "Usage:"
echo " $0 SOURCE"
echo "Arguments:"
echo " SOURCE an expression such that SOURCE/sensor.dat and"
echo " SOURCE/distance.dat can be used as arguments for"
echo " scp (e. g. user@host:/path/to/files)"
echo
echo "Note: Use ssh-add to avoid typing your SSH passphrase every second"
exit 1
fi
function plot() {
scp "${SCP_EXPR}/sensor.dat" "${SCP_EXPR}/distance.dat" .
echo "set terminal png; plot 'sensor.dat' using 0:1 with line, 'distance.dat' using 0:1 axis x1y2 with line"| gnuplot > live-tmp.png
mv live-tmp.png live.png
}
SCP_EXPR=$1
echo 0 > sensor.dat
echo 0 > distance.dat
plot
feh -x --reload 0.1 live.png &
while true
do
sleep 0.1
plot
done
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