Challenges

Build your own Shell

using Go

Learn about parsing shell commands, executing programs and more

43/59 stages

Build your own grep

using Java

Learn about regex syntax: character classes, quantifiers and more

8/33 stages

Build your own Claude Code

using Java

Learn about LLM APIs, tool calling, agent loops and more

1/6 stages

• Started the Build your own Claude Code challenge using Java

• Started the Build your own Shell challenge using Go

• Started the Build your own grep challenge using Java

• Joined CodeCrafters