See? Here's a graph of your productivity gains after using spark: ▁▂▃▅▇

This is a fork of Zach Holman's original spark with fixes and additional features.

• spark requires bash and sed; additionally bc when scaling input data.

Download or clone the Git repository (cloning allows easy updating via git pull):

git clone [--branch stable] https://github.com/inkarkat/spark.git

• The ./bin subdirectory is supposed to be added to PATH.

Depending on the fonts you have in your system and you use in the terminal, you might end up with irregular blocks. This is due to some fonts providing only part of the blocks, while the others are taken from a different, fallback font.

Just run spark 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.

spark 0 30 55 80 33 150
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Invoke help with spark -h.

There's a lot of stuff you can do.

Number of commits to the github/github Git repository, by author:

› git shortlog -s |
      cut -f1 |
      spark
  ▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▃▁▁▁▁▁▁▁▁▂▁▁▅▁▂▁▁▁▂▁▁▁▁▁▁▁▁▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁

Magnitude of earthquakes worldwide 2.5 and above in the last 24 hours:

› curl -s https://earthquake.usgs.gov/earthquakes/feed/v1.0/summary/2.5_day.csv |
  sed '1d' |
  cut -d, -f5 |
  spark
▃█▅▅█▅▃▃▅█▃▃▁▅▅▃▃▅▁▁▃▃▃▃▃▅▃█▅▁▃▅▃█▃▁

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

› awk '{ print length($0) }' spark |
  grep -Ev 0 |
  spark
  ▁▁▁▁▅▁▇▁▁▅▁▁▁▁▁▂▂▁▃▃▁▁▃▁▃▁▂▁▁▂▂▅▂▃▂▃▃▁▆▃▃▃▁▇▁▁▂▂▂▇▅▁▂▂▁▇▁▃▁▇▁▂▁▇▁▁▆▂▁▇▁▂▁▁▂▅▁▂▁▆▇▇▂▁▂▁▁▁▂▂▁▅▁▂▁▁▃▁▃▁▁▁▃▂▂▂▁▁▅▂▁▁▁▁▂▂▁▁▁▂▂

Since it's just a shell script, you could pop it in your prompt, too:

ruby-1.8.7-p334 in spark/ on master with history: ▂▅▇▂
›

The Wiki (from the original author) is a great place to collect all of your wicked cool usage for spark.

• automated testing is done with bats - Bash Automated Testing System (https://github.com/bats-core/bats-core)