Extends the standard filesystem MCP with Linux-specific operations you'll need when Claude is managing server configs or deployment scripts. Adds proper symlink handling, permission reading and modification through chmod, and detailed file metadata access that respects Unix ownership models. Reach for this when you're working on Linux systems and need more than basic read/write, like setting up application directories with correct permissions, managing log file symlinks, or auditing filesystem access controls. It's the MCP you want when Claude needs to actually understand and modify the security posture of files, not just their contents.