Developer Builds Open-Source LLM Tool 'Nudge' to Fix Failed Terminal Commands

A developer built an open-source command-line tool called 'nudge' to address the productivity cost of mistyped or incorrect terminal commands across Windows and Unix-like shells. The tool intercepts failed commands and suggests the most likely intended correction, which users can review before choosing to run, edit, or cancel. Simple typos are resolved locally without querying an AI model, while more complex errors involving wrong subcommands or plain-English intent are handled by a cloud or local Ollama-compatible LLM. Nudge integrates with PowerShell, bash, zsh, and fish, and applies an extra confirmation step for potentially destructive commands such as force-pushes or recursive deletions. The initial prototype was built in roughly an hour using an LLM coding agent and has since been refined into a publicly shareable, narrowly scoped tool.