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Realtime graph for data points via stdin (google ping) using asciigraph (https://github.com/guptarohit/asciigraph).

command:

ping -i 0.2 google.com \
  | grep -oP '(?<=time=).*(?=ms)' --line-buffered \
  | asciigraph -r -h 10 -w 40 -c 'realtime plot data (google ping in ms) from stdin'