pipeplot draws an interactive graph in a terminal based on data from pipe.
https://raw.githubusercontent.com/MyGodIsHe/pipeplot/master/doc/readme_screencast.gif
pip install pipeplot
ping ya.ru | grep --line-buffered time | sed -u -e 's#.*time=\([^ ]*\).*#1円#' | pipeplot --min 0
while true; \ do curl -s https://coronavirus-19-api.herokuapp.com/all \ | jq '.deaths'; \ sleep 60; \ done \ | pipeplot --color 1 --direction left
API: https://github.com/javieraviles/covidAPI
while true; \ do \ curl -s 'http://graphite/render?target=my_app_rps_error&format=json&from=-5min&until=now' \ | jq -c '.[0].datapoints[-1]'; \ sleep 5; \ done \ | sed -u s/null/0/ \ | stdbuf -oL uniq \ | stdbuf -oL jq '.[0]' \ | pipeplot