| Category: Programming + AI
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Installation on Ubuntu (WSL2)
sudo apt install npm
mkdir -p ~/.npm-global
npm config set prefix ~/.npm-global
echo 'export PATH=~/.npm-global/bin:$PATH' >> ~/.bashrc
# echo 'export PATH=~/.npm-global/bin:$PATH' >> ~/.bash_path
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
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file
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| Project memory
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$PROJECT_DIR/CLAUDE.md
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| User memory
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~/.claude/CLAUDE.md
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Local project memory
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$PROJECT_DIR/CLAUDE.local.md |
Sub agents
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file
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| User sub agents
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~/.claude/agents/
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| Project sub agents
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$PROJECT_DIR/.claude/agents/
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Custom commands
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file
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| User commands
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~/.claude/commands/
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| Project commands
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$PROJECT_DIR/.claude/commands/
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MCP Server
claude mcp list
claude mcp add [options] <name> <command> [args...]
claude mcp get my-server
claude mcp remove my-server
Scope
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file
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CLI switch
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| Local MCP Server
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~/.claude.json
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default
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-s local
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| Project MCP server
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$PROJECT_DIR/.mcp.json
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-s project
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| User MCP Server
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~/.claude.json
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-s user
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settings.json
Docs: https://docs.anthropic.com/en/docs/claude-code/settings
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file
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scope
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| User settings
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~/.claude/settings.json
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| Project settings
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$PROJECT_DIR/.claude/settings.json
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all users
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| Project settings
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$PROJECT_DIR/.claude/settings.local.json
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local/personal only
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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
Links & Videos & Learning