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Superspark

Inspired by Zach Holman's spark, it brings sparklines, with greater detail, to your shell.

See the demo:

install

superspark is a shell script that wraps arround a tiny php command line script. For it to run you need php 5.3 (or above) and need to place the script somewhere on your $PATH.

wget https://raw.github.com/muhqu/superspark/master/superspark \
  -O /usr/local/bin/superspark
chmod +x /usr/local/bin/superspark
superspark -h

basic usage

Read values via script arguments.

$ superspark 1 2 3 5 8 15 26



  ̄̄ ̄̄̄ ̄̄̄̄ ̄̄̄̄̄ ̄̄̄̄̄̄̄ ̄̄̄̄̄̄̄̄̄̄̄̄ ̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄

Read values from stdin. One value per line.

$ seq 0 18 | superspark



  ̄ ̄̄ ̄̄̄ ̄̄̄̄ ̄̄̄̄̄ ̄̄̄̄̄̄ ̄̄̄̄̄̄̄ ̄̄̄̄̄̄̄̄ ̄̄̄̄̄̄̄̄̄ ̄̄̄̄̄̄̄̄̄̄ ̄̄̄̄̄̄̄̄̄̄̄ ̄̄̄̄̄̄̄̄̄̄̄̄ ̄̄̄̄̄̄̄̄̄̄̄̄̄ ̄̄̄̄̄̄̄̄̄̄̄̄̄̄ ̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄ ̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄ ̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄ ̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄ ̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄

advanced usage

Repeatedly exec CMD to read values. One value per line. Sleep N seconds between redraws.

$ superspark -n 1 -c "seq 0 40 | awk '{
    printf \"%6d\\n\", (sin((systime()+\$1)/2)*cos((systime()+\$1)/4)+1)*20;
  }'"



  ̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄ ̄̄̄̄̄̄̄̄̄̄̄ ̄̄̄̄̄̄̄ ̄̄̄̄ ̄̄̄̄ ̄̄̄̄̄̄̄ ̄̄̄̄̄̄̄̄̄̄ ̄̄̄̄̄̄̄̄̄̄̄ ̄̄̄̄̄̄̄̄̄̄̄ ̄̄̄̄̄̄̄̄ ̄̄̄̄̄ ̄̄̄̄ ̄̄̄̄̄ ̄̄̄̄̄̄̄̄̄ ̄̄̄̄̄̄̄̄̄̄̄̄̄̄ ̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄ ̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄ ̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄ ̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄ ̄̄̄̄̄̄̄̄̄̄̄̄ ̄̄̄̄̄̄̄̄̄̄̄̄ ̄̄̄̄̄̄̄̄̄̄̄̄̄ ̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄ ̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄ ̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄ ̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄ ̄̄̄̄̄̄̄̄̄̄̄̄ ̄̄̄̄̄̄̄ ̄̄̄̄ ̄̄̄̄ ̄̄̄̄̄̄ ̄̄̄̄̄̄̄̄̄ ̄̄̄̄̄̄̄̄̄̄̄ ̄̄̄̄̄̄̄̄̄̄̄ ̄̄̄̄̄̄̄̄̄ ̄̄̄̄̄̄ ̄̄̄̄ ̄̄̄̄̄ ̄̄̄̄̄̄̄̄ ̄̄̄̄̄̄̄̄̄̄̄̄̄ ̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄

Continuously read from stdin and draw an accumulated graph with every new value. One value per line.

$ ping -n localhost | awk 'BEGIN{FS="time=|ms"}{
    printf "%d\n", $2*1000;fflush();}' | superspark -s -L



  ̄ ̄̄̄̄̄̄̄̄̄̄̄̄ ̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄ ̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄ ̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄ ̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄ ̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄ ̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄ ̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄ ̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄ ̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄ ̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄ ̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄ ̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄ ̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄ ̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄ ̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄ ̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄ ̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄ ̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄ ̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄ ̄̄̄̄̄̄̄̄̄̄ ̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄ ̄̄̄̄̄̄̄̄̄̄̄̄̄̄̄
 min: 0      max: 126    curr: 93     mean: 98.79

how does it work?

The sparklines are assembled using the unicode combining character U+0304 which is named COMBINING MACRON. ...like an apostrophe dash. So, this obviously only works on full-fledged UTF-8 enabled terminals... e.g. iTerm 2, Terminal.app on Mac. Don't know about windows/linux support yet...

who?
© 2013 by Mathias Leppich
github.com/muhqu, @muhqu