Claude Code

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AI Development Tools AI Prompts & Agents AI Workflows & Patterns Claude Code Claude Code/Cheat Sheet Codex CLI Gemini CLI Local LLMs MCP Server Spec-Kit

Installation on Ubuntu (WSL2)

sudo apt install npm

mkdir -p ~/.npm-global
npm config set prefix ~/.npm-global
echo 'export PATH=~/.npm-global/bin:$PATH' >> ~/.bashrc
source ~/.bashrc

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

which claude
claude doctor
claude --version

Memory

Docs: https://docs.anthropic.com/en/docs/claude-code/memory

	file
Project memory	$PROJECT_DIR/CLAUDE.md
User memory	~/.claude/CLAUDE.md
Local project memory	$PROJECT_DIR/CLAUDE.local.md deprecated

Sub agents

	file
User sub agents	~/.claude/agents/
Project sub agents	$PROJECT_DIR/.claude/agents/

• Example sub agents:
  • https://github.com/wshobson/agents
  • https://github.com/contains-studio/agents

Custom commands

	file
User commands	~/.claude/commands/
Project commands	$PROJECT_DIR/.claude/commands/

• Example custom commands:
  • https://github.com/wshobson/commands

MCP Server

claude mcp list
claude mcp add <name> <command> [args...]
claude mcp get my-server
claude mcp remove my-server

Scope

	file		CLI switch
Local MCP Server	~/.claude.json	default	-s local
Project MCP server	$PROJECT_DIR/.mcp.json		-s project
User MCP Server	~/.claude.json		-s user

settings.json

Docs: https://docs.anthropic.com/en/docs/claude-code/settings

	file	scope
User settings	~/.claude/settings.json
Project settings	$PROJECT_DIR/.claude/settings.json	all users
Project settings	$PROJECT_DIR/.claude/settings.local.json	local/personal only

Example:

{
  "permissions": {
    "allow": [
      "Bash(ls:*)"
    ],
    "deny": []
  }
}

Hook example:

  "hooks": {
    "UserPromptSubmit": [
      {
        "hooks": [
          {
            "type": "command",
            "command": ".claude/hooks/prompt-validator.py"
          }
        ]
      }
    ]
  }

Command line options

claude                                   # interactive mode
claude "task"                            # run single task
claude -p "task"                         # run single task, print response, exit
claude --dangerously-skip-permissions

claude config list
claude doctor
claude update

Videos

	Description	Channel	URL	Comments
1.	Basics	Matt Maher	https://www.youtube.com/watch?v=T_IYHx-9VGU
2.	Best practices	Matt Maher	https://www.youtube.com/watch?v=IUi--nVU4yA
H	Hooks	IndyDevDan	https://www.youtube.com/watch?v=J5B9UGTuNoM
	Hooks	Greg Baugues	https://www.youtube.com/watch?v=8T0kFSseB58
H	Hooks 2	IndyDevDan	https://www.youtube.com/watch?v=9ijnN985O_c
		IndyDevDan	https://github.com/disler/claude-code-hooks-mastery
	Hooks	Better Stack	https://www.youtube.com/watch?v=Q4gsvJvRjCU
S	Sub agents	Matt Maher	https://www.youtube.com/watch?v=6MLyc3jYisQ
S	Sub agents	IndyDevDan	https://www.youtube.com/watch?v=7B2HJr0Y68g
	Sub agents	AI LABS	https://www.youtube.com/watch?v=7Sx0o-41r2k
		AI Labs	https://www.youtube.com/watch?v=6Rg5M69bMgQ
	Workflow	AI Jason	https://www.youtube.com/watch?v=UZb0if-7wGE
	Vibe Coding	Riley Brown	https://www.youtube.com/watch?v=_GMtx9EsIKU	Build Lovable in 75min
	Vibe Coding	Sean Kochel	https://www.youtube.com/watch?v=LWZrsF3kqI0	Sketch to Mobile App in 21min

• Channels
  • Matt Maher: https://www.youtube.com/@MetalSole
  • IndyDevDan: https://www.youtube.com/@indydevdan/
  • AI Labs: https://www.youtube.com/@AILABS-393