ripgrep

A fast grep tool #

tags

Rust

ripgrep is a line-oriented search tool that recursively searches the current directory for a regex pattern. Written in Rust language and amazingly fast.

rg cheatsheet

Experience #

Used it in helm-rg package in Emacs, works like magic

Command #

Linux Command Structure

# ripgrep --type-list
# or
rg --type-list

options #

-g (–glob) #

Process all glob patterns given with the -g/–glob flag case insensitively. This effectively treats -g/–glob as –iglob. This flag can be disabled with –no-glob-case-insensitive.

file1.txt
File2.txt
file3.TXT
dir1/File4.txt
dir2/file5.TXT

Case-sensitive search (Default behavior):

rg -g '*.txt'

-t (–type) #

Do not search files matching TYPE. Multiple -T/–type-not flags may be provided. Use the –type-list flag to list all available types.

1. -t is used to search specific file types. For example, if you only want to search through Python files:

   rg -t py "import os"
   

   This command will search for the string “import os” but only within Python files in the current directory and all subdirectories.

2. -T is used to exclude certain file types from the search. For example, if you want to search for a string but not within HTML files:

   rg -T html "search_string"
   

   This command will search for “search_string” in all files in the current directory and subdirectories, excluding HTML files.

Examples #

ignore case #

# in a file
rg -i "Error" /var/log/syslog
# current directory
rg -i "Error"

with ^ and $ #

rg '^check.*you$' /opt/homebrew/Cellar -tpy