developer-roadmap/src/data/roadmaps/full-stack/content/114-cli-apps.md

Checkpoint

At this point you should be able to build CLI applications using Node.js or whatever backend programming language you picked.

You should be able to build a CLI application that can:

• Read and write files
• Parse command line arguments
• Make HTTP requests
• Parse JSON
• Use a third-party library (e.g. a library for parsing CSV files)
• Use a third-party API

Here are some ideas for CLI applications you can build:

• Create a CLI application that takes a URL and a CSS selector arguments and prints the text content of the element that matches the selector. Hint you can use cheerio
• An application that takes optionally takes two dates and prints the most starred GitHub projects in that date range. Hint you can use GitHub's search API
• Bulk rename files in a directory. Hint you can use fs and path
• Write a CLI application that takes a path as input and compresses all the images in that directory. It should accept an option for output path; if the output path is not given it should compress images in place otherwise write the compressed images to the output path. Hint you can use sharp.