GNO vs grep/ripgrep

This comparison matters because many developers reach for rg first and only later realize they are trying to search a knowledge base, not just strings in code.

GNO and grep/ripgrep are complementary, but they solve different search problems. grep and rg are excellent for exact pattern matching in code and shell pipelines. GNO adds semantic retrieval, ranking, multi-format indexing, and workspace/agent surfaces for knowledge-base search.

At a Glance

• Choose ripgrep when you know the exact symbol, string, or regex.
• Choose GNO when you need concepts, ranking, cross-file meaning, PDFs/docs, or AI-assisted retrieval.
• Use both if your workflow spans code search and knowledge search.

Quick Summary

Feature Comparison

Shell & Integration

The Key Difference

grep finds strings. GNO finds meaning.

# grep: must know exact terms
grep -r "authentication" ./docs
grep -r "auth" ./docs
grep -r "login" ./docs
grep -r "sign in" ./docs

# GNO: finds all related concepts
gno query "how does authentication work"

GNO’s semantic search understands that “authentication”, “login”, “sign in”, and “auth” are related concepts.

When to Use GNO

GNO is for questions like “what did we decide?” or “where have I seen this idea before?”, not just “where does this exact token appear?”

Concept search: You’re looking for ideas, not exact strings.

# Find discussions about error handling approaches
gno query "how to handle errors gracefully"

# Find anything related to performance optimization
gno query "making the app faster"

Document formats: You have PDFs, Word docs, spreadsheets.

# Search across all your documents
gno init ~/Documents --name docs
gno index
gno query "Q4 budget projections"

AI workflows: You want AI agents to search your knowledge base.

# Let Claude search your docs
gno mcp install --target claude

# Get AI-generated answers
gno ask "what is our deployment process" --answer

Knowledge base: You’re building a searchable second brain.

# Index notes, papers, meeting transcripts
gno init ~/notes --name notes
gno query "what did we decide about the API redesign"

When to Use grep/ripgrep

grep/ripgrep are still the right answer for exact code lookup and shell-native pattern work.

Exact patterns: You know the exact string or regex.

# Find all TODO comments
rg "TODO:" --type rust

# Find function definitions
rg "^func \w+" --type go

Code search: Searching source code for symbols and patterns.

# Find all uses of a function
rg "handleError\(" src/

# Find import statements
rg "^import.*from" --type ts

Pipeline scripts: Chaining tools in shell pipelines.

# Count occurrences per file
rg -c "error" | sort -t: -k2 -rn

# Extract and process matches
rg -o "v\d+\.\d+\.\d+" | sort -u

One-off queries: Quick searches where indexing isn’t worth it.

# Quick check in a small directory
rg "config" ./settings/

Complementary Usage

Use both tools together:

# Use GNO for semantic search across docs
gno query "authentication best practices"

# Use rg for exact code search
rg "AuthProvider" src/

# Use GNO for AI-powered answers
gno ask "how do we authenticate users" --answer

Getting Started with GNO

If you’re comfortable with grep/ripgrep, GNO is easy to add:

# Install
bun install -g @gmickel/gno

# Initialize and index
gno init ~/notes --name notes
gno index

# Search semantically (hybrid by default)
gno query "your search query"

# Or BM25-only for exact keyword matching
gno search "your search query"

Both tools have their place. grep/ripgrep excels at exact pattern matching in code. GNO excels at finding concepts in documents and knowledge bases.