ripgrep (rg) ------------ `ripgrep` is a command line search tool that combines the usability of The Silver Searcher (an `ack` clone) with the raw speed of GNU grep. `ripgrep` has first class support on Windows, Mac and Linux, with binary downloads available for [every release](https://github.com/BurntSushi/ripgrep/releases). [![Linux build status](https://travis-ci.org/BurntSushi/ripgrep.svg?branch=master)](https://travis-ci.org/BurntSushi/ripgrep) [![Windows build status](https://ci.appveyor.com/api/projects/status/github/BurntSushi/ripgrep?svg=true)](https://ci.appveyor.com/project/BurntSushi/ripgrep) [![](https://img.shields.io/crates/v/ripgrep.svg)](https://crates.io/crates/ripgrep) Dual-licensed under MIT or the [UNLICENSE](http://unlicense.org). ### Screenshot of search results [![A screenshot of a sample search with ripgrep](http://burntsushi.net/stuff/ripgrep1.png)](http://burntsushi.net/stuff/ripgrep1.png) ### Quick example comparing tools This example searches the entire Linux kernel source tree (after running `make defconfig && make -j8`) for `[A-Z]+_SUSPEND`, where all matches must be words. Timings were collected on a system with an Intel i7-6900K 3.2 GHz. Please remember that a single benchmark is never enough! See my [blog post on `ripgrep`](http://blog.burntsushi.net/ripgrep/) for a very detailed comparison with more benchmarks and analysis. | Tool | Command | Line count | Time | | ---- | ------- | ---------- | ---- | | ripgrep | `rg -n -w '[A-Z]+_SUSPEND'` | 450 | **0.245s** | | [The Silver Searcher](https://github.com/ggreer/the_silver_searcher) | `ag -w '[A-Z]+_SUSPEND'` | 450 | 0.753s | | [git grep](https://www.kernel.org/pub/software/scm/git/docs/git-grep.html) | `LC_ALL=C git grep -E -n -w '[A-Z]+_SUSPEND'` | 450 | 0.823s | | [git grep (Unicode)](https://www.kernel.org/pub/software/scm/git/docs/git-grep.html) | `LC_ALL=en_US.UTF-8 git grep -E -n -w '[A-Z]+_SUSPEND'` | 450 | 2.880s | | [sift](https://github.com/svent/sift) | `sift --git -n -w '[A-Z]+_SUSPEND'` | 450 | 3.656s | | [The Platinum Searcher](https://github.com/monochromegane/the_platinum_searcher) | `pt -w -e '[A-Z]+_SUSPEND'` | 450 | 12.369s | | [ack](http://beyondgrep.com/) | `ack -w '[A-Z]+_SUSPEND'` | 1878 | 16.952s | (Yes, `ack` [has](https://github.com/petdance/ack2/issues/445) a [bug](https://github.com/petdance/ack2/issues/14).) ### Why should I use `ripgrep`? * It can replace both The Silver Searcher and GNU grep because it is faster than both. (N.B. It is not, strictly speaking, a "drop-in" replacement for both, but the feature sets are far more similar than different.) * Like The Silver Searcher, `ripgrep` defaults to recursive directory search and won't search files ignored by your `.gitignore` files. It also ignores hidden and binary files by default. `ripgrep` also implements full support for `.gitignore`, where as there are many bugs related to that functionality in The Silver Searcher. * `ripgrep` can search specific types of files. For example, `rg -tpy foo` limits your search to Python files and `rg -Tjs foo` excludes Javascript files from your search. `ripgrep` can be taught about new file types with custom matching rules. * `ripgrep` supports many features found in `grep`, such as showing the context of search results, searching multiple patterns, highlighting matches with color and full Unicode support. Unlike GNU grep, `ripgrep` stays fast while supporting Unicode (which is always on). In other words, use `ripgrep` if you like speed, sane defaults, fewer bugs and Unicode. ### Is it really faster than everything else? Yes. A large number of benchmarks with detailed analysis for each is [available on my blog](http://blog.burntsushi.net/ripgrep/). Summarizing, `ripgrep` is fast because: * It is built on top of [Rust's regex engine](https://github.com/rust-lang-nursery/regex). Rust's regex engine uses finite automata, SIMD and aggressive literal optimizations to make searching very fast. * Rust's regex library maintains performance with full Unicode support by building UTF-8 decoding directly into its deterministic finite automaton engine. * It supports searching with either memory maps or by searching incrementally with an intermediate buffer. The former is better for single files and the latter is better for large directories. `ripgrep` chooses the best searching strategy for you automatically. * Applies your ignore patterns in `.gitignore` files using a [`RegexSet`](https://doc.rust-lang.org/regex/regex/struct.RegexSet.html). That means a single file path can be matched against multiple glob patterns simultaneously. * Uses a Chase-Lev work-stealing queue for quickly distributing work to multiple threads. ### Installation The binary name for `ripgrep` is `rg`. [Binaries for `ripgrep` are available for Windows, Mac and Linux.](https://github.com/BurntSushi/ripgrep/releases) Linux binaries are static executables. Windows binaries are available either as built with MinGW (GNU) or with Microsoft Visual C++ (MSVC). When possible, prefer MSVC over GNU, but you'll need to have the [Microsoft VC++ 2015 redistributable](https://www.microsoft.com/en-us/download/details.aspx?id=48145) installed. If you're a **Mac OS X Homebrew** user, then you can install ripgrep either from homebrew-core, (compiled with rust stable, no SIMD): ``` $ brew install ripgrep ``` or you can install a binary compiled with rust nightly (including SIMD and all optimizations) by utilizing a custom tap: ``` $ brew tap burntsushi/ripgrep https://github.com/BurntSushi/ripgrep.git $ brew install burntsushi/ripgrep/ripgrep-bin ``` If you're an **Arch Linux** user, then you can install `ripgrep` from the official repos: ``` $ pacman -S ripgrep ``` If you're a **Fedora 24+** user, you can install `ripgrep` from [copr](https://copr.fedorainfracloud.org/coprs/carlgeorge/ripgrep/): ``` $ dnf copr enable carlgeorge/ripgrep $ dnf install ripgrep ``` If you're a **RHEL/CentOS 7** user, you can install `ripgrep` from [copr](https://copr.fedorainfracloud.org/coprs/carlgeorge/ripgrep/): ``` $ yum-config-manager --add-repo=https://copr.fedorainfracloud.org/coprs/carlgeorge/ripgrep/repo/epel-7/carlgeorge-ripgrep-epel-7.repo $ yum install ripgrep ``` If you're a **Nix** user, you can install `ripgrep` from [nixpkgs](https://github.com/NixOS/nixpkgs/blob/master/pkgs/tools/text/ripgrep/default.nix): ``` $ nix-env --install ripgrep $ # (Or using the attribute name, which is also `ripgrep`.) ``` If you're a **Rust programmer**, `ripgrep` can be installed with `cargo`: ``` $ cargo install ripgrep ``` `ripgrep` isn't currently in any other package repositories. [I'd like to change that](https://github.com/BurntSushi/ripgrep/issues/10). ### Whirlwind tour The command line usage of `ripgrep` doesn't differ much from other tools that perform a similar function, so you probably already know how to use `ripgrep`. The full details can be found in `rg --help`, but let's go on a whirlwind tour. `ripgrep` detects when its printing to a terminal, and will automatically colorize your output and show line numbers, just like The Silver Searcher. Coloring works on Windows too! Colors can be controlled more granularly with the `--color` flag. One last thing before we get started: `ripgrep` assumes UTF-8 *everywhere*. It can still search files that are invalid UTF-8 (like, say, latin-1), but it will simply not work on UTF-16 encoded files or other more exotic encodings. [Support for other encodings may happen.](https://github.com/BurntSushi/ripgrep/issues/1) To recursively search the current directory, while respecting all `.gitignore` files, ignore hidden files and directories and skip binary files: ``` $ rg foobar ``` The above command also respects all `.ignore` files, including in parent directories. `.ignore` files can be used when `.gitignore` files are insufficient. In all cases, `.ignore` patterns take precedence over `.gitignore`. To ignore all ignore files, use `-u`. To additionally search hidden files and directories, use `-uu`. To additionally search binary files, use `-uuu`. (In other words, "search everything, dammit!") In particular, `rg -uuu` is similar to `grep -a -r`. ``` $ rg -uu foobar # similar to `grep -r` $ rg -uuu foobar # similar to `grep -a -r` ``` (Tip: If your ignore files aren't being adhered to like you expect, run your search with the `--debug` flag.) Make the search case insensitive with `-i`, invert the search with `-v` or show the 2 lines before and after every search result with `-C2`. Force all matches to be surrounded by word boundaries with `-w`. Search and replace (find first and last names and swap them): ``` $ rg '([A-Z][a-z]+)\s+([A-Z][a-z]+)' --replace '$2, $1' ``` Named groups are supported: ``` $ rg '(?P[A-Z][a-z]+)\s+(?P[A-Z][a-z]+)' --replace '$last, $first' ``` Up the ante with full Unicode support, by matching any uppercase Unicode letter followed by any sequence of lowercase Unicode letters (good luck doing this with other search tools!): ``` $ rg '(\p{Lu}\p{Ll}+)\s+(\p{Lu}\p{Ll}+)' --replace '$2, $1' ``` Search only files matching a particular glob: ``` $ rg foo -g 'README.*' ``` Or exclude files matching a particular glob: ``` $ rg foo -g '!*.min.js' ``` Search only HTML and CSS files: ``` $ rg -thtml -tcss foobar ``` Search everything except for Javascript files: ``` $ rg -Tjs foobar ``` To see a list of types supported, run `rg --type-list`. To add a new type, use `--type-add`, which must be accompanied by a pattern for searching (`rg` won't persist your type settings): ``` $ rg --type-add 'foo:*.{foo,foobar}' -tfoo bar ``` The type `foo` will now match any file ending with the `.foo` or `.foobar` extensions. ### Regex syntax The syntax supported is [documented as part of Rust's regex library](https://doc.rust-lang.org/regex/regex/index.html#syntax). ### Building `ripgrep` is written in Rust, so you'll need to grab a [Rust installation](https://www.rust-lang.org/) in order to compile it. `ripgrep` compiles with Rust 1.9 (stable) or newer. Building is easy: ``` $ git clone https://github.com/BurntSushi/ripgrep $ cd ripgrep $ cargo build --release $ ./target/release/rg --version 0.1.3 ``` If you have a Rust nightly compiler, then you can enable optional SIMD acceleration like so: ``` RUSTFLAGS="-C target-cpu=native" cargo build --release --features simd-accel ``` ### Running tests `ripgrep` is relatively well tested, including both unit tests and integration tests. To run the full test suite, use: ``` $ cargo test ``` from the repository root.