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#! /bin/bash
temper=/krebs/temper/temper
main() {
case "${1--K}" in
(--help)
echo "report temperature in K, °C, °R, or °F."
exit
;;
(-C|--celsius) unit='Grad Zelsius' ; formula='x - 273.15' ;;
(-F|--fahrenheit) unit='Grad Fahrenheit'; formula='x * 9/5 - 459.67' ;;
(-R|--rankine) unit='Grad Renkin' ; formula='x * 9/5' ;;
(-K|--kelvin) unit='Kelvin' ; formula='x' ;;
(*)
echo 'Error 1: you are made of stupid!'
exit 23
;;
esac
if test -f $temper -a -x $temper; then
espeak_inside `inside_temp "$formula"` $unit
fi
espeak_outside `outside_temp "$formula"` $unit
}
## temp [<formula with temperature as x>]
## Echo temperature in K. If formula is given then return that result instead.
inside_temp() {
echo "scale=2; x=`$temper` + 273.15; ${1-x}" | bc
}
outside_temp() {
echo "scale=2; x=`dig +short txt outside.elwood.temp.citecs.de |
sed 's/^"DEG \([0-9]\+\.[0-9]\+\)"$/\1/'
` + 273.15; ${1-x}" | bc
}
espeak_inside() { echo Die Krebs-tempera-tur beträgt $@ | to_espeak; }
espeak_outside() { echo Die Außen-tempera-tur beträgt $@ | to_espeak; }
to_espeak() {
sed '
s/\(\.[0-9]\)0\+/\1/g
s/\(\.[0-9]\)\([0-9]\)[0-9]*/ \1 \2 /;
s/^-/minus /;
s/\./ komma /;
' | tee $NOISE_linefeed
}
main "$@"
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