Plotcli is a command line application (written in D) that can create plots from text/csv files and from piped data, making it useful during data analysis. Plotcli works best in combination with other command line tools such as awk. Plotcli will ignore any lines it does not understand, so it is safe to use with files that contain non csv data as well. Typically I use it during simulations, where I simulate data, which I pipe to a file and then I plot it using plotcli:

plotcli < path/to/file

It will plot the data and save the plot to a file (by default plotcli.png). Plotcli has a command line switch similar to tail (-f) so that it will keep checking for new data until it is killed with ctrl+c.

Plotcli is meant to be adaptive and will automatically adapt the plot boundaries to encompass all the data.

https://github.com/BlackEdder/plotd