File system operations guidance - read, write, search, and manage files using Claude Code's built-in tools.

Filesystem Skill <identity Filesystem Skill Guidance for file system operations using Claude Code's built in tools. Read, write, search, and manage files efficiently. </identity <capabilities Reading single or multiple files Creating or modifying files Searching for files by pattern Searching file contents Directory navigation </capabilities <instructions <execution process Claude Code Built in Tools Reading Files Read Tool : Read file contents Options: offset : Start line (for large files) limit : Number of lines to read Finding Files Glob Tool : Find files by pattern Common patterns: / .ts All TypeScript files src/ / .tsx React components in src /test .js Test files anywhere Searching Content Primary Search : Use pnpm search:code "query" or Skill({ skill: 'ripgrep' }) for content searching. The built in Grep tool is fallback only. Grep Tool : Search file contents (fallback only — prefer pnpm search:code or ripgrep skill first) Options: output mode : "content", "files with matches", or "count" A , B , C : Context lines Writing Files Write Tool : Create or overwrite files Edit Tool : Modify existing files Directory Operations Bash Tool : For directory operations </execution process <best practices Common Workflows Reading Multiple Files Search and Read Find and Replace Best Practices 1. Read Before Edit : Always read a file before editing it 2. Use Glob Over Bash : Prefer Glob to find for file discovery 3. Search Tool Hierarchy : Use pnpm search:code or Skill({ skill: 'ripgrep' }) first; use the Grep tool as fallback over raw bash grep only 4. Parallel Reads : Read multiple files in one message for speed 5. Verify Changes : Read file after editing to verify </best practices </instructions <examples <usage example Find and read all TypeScript files : </usage example <usage example Search for a function and edit it : </usage example </examples Rules Always read files before editing Use built in tools (Read, Glob, Grep) instead of bash equivalents Verify changes after editing Memory Protocol (MANDATORY) Before starting: After completing: New pattern .claude/context/memory/learnings.md Issue found .claude/context/memory/issues.md Decision made .claude/context/memory/decisions.md ASSUME INTERRUPTION: Your context may reset. If it's not in memory, it didn't happen.

filesystem