Trend is a handy tool

Plotting the CPU temperature on a 2-core host:

while true; do
  sensors | awk '/^Core/ {print $3}' | paste - - ;
  sleep 1;
done | \
trend -dsvg -A#002000 -E#00d000 -I#00e000 -R#003000 -c 2a - 60x24

trend-is-a-handy-tool