▁▂▃▅▂▇ in your shell. Groovy flavoured!
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▁▂▃▅▂▇ in your shell. Groovy flavoured!

Generates sparklines for a set of data. An alternative implementation of spark powered by Groovy.

sparky takes a comma-separated list of data and then prints a sparkline out of it.


$ sparky 1 5 22 13 53
===> ▁▁▃▂▇

$ sparky 0,30,55,80,33,150
===> ▁▂▃▅▂▇

$ sparky help
===> Prints the sparky help text


sparky is a Groovy script. We can write Unix scripts with Groovy and execute them directly on the command line as if they were normal Unix shell scripts. You need to install the Groovy binary distribution and groovy is on your $PATH. Then to run the script from the command line, drop it somewhere and make sure it's added to your $PATH.


Just run sparky and pass it a list of numbers (comma-delimited, spaces, whatever you'd like). It's designed to be used in conjunction with other scripts that can output in that format.

$ sparky 0,30,55,80,33,150

$ echo 9 13 5 17 1 | sparky

cooler usage

There's a lot of stuff you can do.

Number of commits to the groovy-core Git repository, by author:

$ git shortlog -s |
> awk '{print $1}' |
> sparky

Code visualization. The number of characters of sparky itself, by line, ignoring empty lines:

$ awk '{ print length($0) }' sparky |
> grep -v ^0$ |
> sparky