ripgrep (rg)

Fast, smart recursive search. Respects

.gitignore

by default.

Quick Start

Basic search

# Search for "TODO" in current directory
rg "TODO"
Case-insensitive search
rg -i "fixme"
Search specific file types

rg "error" -t py       # Python files only
rg "function" -t js    # JavaScript files

Common patterns

# Whole word match
rg -w "test"
Show only filenames
rg -l "pattern"
Show with context (3 lines before/after)
rg -C 3 "function"
Count matches

rg -c "import"

Advanced Usage

File type filtering

# Multiple file types
rg "error" -t py -t js
Exclude file types
rg "TODO" -T md -T txt
List available types

rg --type-list

Search modifiers

# Regex search
rg "user_\d+"
Fixed string (no regex)
rg -F "function()"
Multiline search
rg -U "start.*end"
Only show matches, not lines
rg -o "https?://[^\s]+"

Path filtering

# Search specific directory
rg "pattern" src/
Glob patterns
rg "error" -g ".log"
rg "test" -g "!.min.js"
Include hidden files
rg "secret" --hidden
Search all files (ignore .gitignore)

rg "pattern" --no-ignore

Replacement Operations

# Preview replacements
rg "old_name" --replace "new_name"
Actually replace (requires extra tool like sd)

rg "old_name" -l | xargs sed -i 's/old_name/new_name/g'

Performance Tips

# Parallel search (auto by default)
rg "pattern" -j 8
Skip large files
rg "pattern" --max-filesize 10M
Memory map files

rg "pattern" --mmap

Common Use Cases

Find TODOs in code:

rg "TODO|FIXME|HACK" --type-add 'code:*.{rs,go,py,js,ts}' -t code

Search in specific branches:

git show branch:file | rg "pattern"

Find files containing multiple patterns:

rg "pattern1" | rg "pattern2"

Search with context and color:

rg -C 2 --color always "error" | less -R

Comparison to grep

Faster: Typically 5-10x faster than grep
Smarter: Respects
```
.gitignore
```
, skips binary files
Better defaults: Recursive, colored output, line numbers
Easier: Simpler syntax for common tasks

Tips

```
rg
```
is often faster than
```
grep -r
```
Use
```
-t
```
for file type filtering instead of
```
--include
```
Combine with other tools:
```
rg pattern -l | xargs tool
```
Add custom types in
```
~/.ripgreprc
```
Use
```
--stats
```
to see search performance

Documentation

GitHub: https://github.com/BurntSushi/ripgrep User Guide: https://github.com/BurntSushi/ripgrep/blob/master/GUIDE.md

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ripgrep (rg)

Quick Start

Basic search

Case-insensitive search

Search specific file types

Common patterns

Show only filenames

Show with context (3 lines before/after)

Count matches

Advanced Usage

File type filtering

Exclude file types

List available types

Search modifiers

Fixed string (no regex)

Multiline search

Only show matches, not lines

Path filtering

Glob patterns

Include hidden files

Search all files (ignore .gitignore)

Replacement Operations

Actually replace (requires extra tool like sd)

Performance Tips

Skip large files

Memory map files

Common Use Cases

Comparison to grep

Tips

Documentation

Quick Start

Manual Installation

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