Spark: Sparklines in your shell

Spark is a lightweight command-line tool that renders sparklines from a space-separated list of numbers or from stdin, accepting any non-numeric delimiters. It installs via “make” and “sudo make install”, defaults to /usr/local, and can be combined with scripts such as curl, git, or awk to visualize data like earthquake magnitudes, daily commit counts, or line lengths in source files.