xavier collantes

Claude Code Cheatsheet

By Xavier Collantes

8/6/2025

Download CLI

Bash

1npm install -g @anthropic-ai/claude-code
2

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Native install:

Bash

1# MacOS, Linux
2curl -fsSL claude.ai/install.sh | bash
3
4# Windows. I recommend using the Windows Linux Subsystem.
5irm https://claude.ai/install.ps1 | iex
6

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Running this should start the CLI:

Bash

1claude
2

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If you run into issues, you can add the following to your .zshrc or .bashrc:

Path may vary depending on your node version.

Bash

1alias claude='~/.nvm/versions/node/v22.18.0/bin/claude'
2

Path may vary depending on your node version. hosted withby Xavier

Download CLI

Basic Commands

CLI Reference

Bash

1claude --help
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Extended Thinking

Claude LLMs have "thinking" variants which can reason about the codebase and provide more accurate responses.

In Cursor you would select the "thinking" variant. In Claude Code, you can ask the LLM to "think" about the codebase with phrases like intensifying phrases such as “think more”, “think a lot”, “think harder”, or “think longer” triggers deeper thinking.

Run Parallel Processes

You can run parallel sessions in the CLI. You can use git worktree to create a new branch and run a parallel session in that branch.

Run Parallel Processes

Pipe In And Out

Bash

1cat app.log | claude -p 'what is the error?' > output.txt
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CLAUDE.md

The project or repo level file named CLAUDE.md is used to set up your project for programming conventions, instructions, and how to structure your codebase.

You can run /init in the Claude CLI to initialize a CLAUDE.md file.

CLAUDE.md

Write most used commands (build, test, lint) to specify which commands to use (Pytest vs Unittest, etc.)
Naming convention such as snake_case or camelCase
How the codebase is structured

In the Cladue CLI, use /memory to read the memories in the CLAUDE.md file.

Here are the templates I use for my projects.

Python:

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Github:

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