Book Image

Hands-On Data Science with the Command Line

By : Jason Morris, Chris McCubbin, Raymond Page
Book Image

Hands-On Data Science with the Command Line

By: Jason Morris, Chris McCubbin, Raymond Page

Overview of this book

The Command Line has been in existence on UNIX-based OSes in the form of Bash shell for over 3 decades. However, very little is known to developers as to how command-line tools can be OSEMN (pronounced as awesome and standing for Obtaining, Scrubbing, Exploring, Modeling, and iNterpreting data) for carrying out simple-to-advanced data science tasks at speed. This book will start with the requisite concepts and installation steps for carrying out data science tasks using the command line. You will learn to create a data pipeline to solve the problem of working with small-to medium-sized files on a single machine. You will understand the power of the command line, learn how to edit files using a text-based and an. You will not only learn how to automate jobs and scripts, but also learn how to visualize data using the command line. By the end of this book, you will learn how to speed up the process and perform automated tasks using command-line tools.
Table of Contents (8 chapters)


In this chapter, we used cut, grep, awk, and sort to deeply inspect our data, as one would in a more traditional database. We then saw how sqlite can provide a lightweight alternative to other databases. Using these tools together, we were able to mine useful knowledge from our raw files.

We also saw how the command line offers several options for doing arithmetic and other mathematical operations. Simple arithmetic and grouped tallies can be performed using bash itself or awk. More complex mathematics can be done using a scripting language, such as bc or python, and be called like other command-line workflow tools.

Finally, we used many of the tools we discussed to produce a useful and interesting result from publicly-available data.

We hope that this book broadens your understanding of just how powerful the command line actually is, especially for data science. However...