There are many reasons why it’s useful to use bash and the command-line. For example, command-line skills help with building repeatable data processes, the command-line makes working with text files easier, it uses less resources, can improve productivity and workflow, it’s great for scripting, and command-line skills are useful for cloud services.

Source: LXer – Linux for Starters: Your Guide to Linux – Get Started with the Terminal – Part 9