why GNU grep is fast

• aho-corasick

  6 822 0.0 Rust

  A fast implementation of Aho-Corasick in Rust.

  A less well known and far more complicated SIMD algorithm for multiple substring search.

• regex

  35 3,075 9.1 Rust

  An implementation of regular expressions for Rust. This implementation uses finite automata and guarantees linear time matching on all inputs.

  

  Ripgrep makes use of Rust's regex crate, which is highly optimised. So a rewrite of Ripgrep is unlikely to maintain the same speed as the original.

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• rust-memchr

  12 567 0.0 Rust

  Optimized string search routines for Rust.

  I'm not sure either myself. GNU libc does use SIMD, but the ones I'm aware of are all written in Assembly, like memchr. ripgrep also uses memchr, but not from libc, since the quality of memchr implementations is very hit or miss. GNU libc's is obviously very good, but things can be quite a bit slower in most other libcs (talking orders of magnitude here). Instead, I wrote my own memchr in Rust: https://github.com/BurntSushi/memchr/blob/8037d11b4357b0f07be2bb66dc2659d9cf28ad32/src/memchr/x86/avx.rs

• gccrs

  27 2,084 9.9

  GCC Front-End for Rust

  

  If it were proposed, it may end up being a political issue. GNU wants things under their umbrella to be GNU GPL licensed, and the rust compiler is not. There is work to get a Rust compiler built into gcc, but it's not nearly ready yet.

• fd

  52 28,867 0.0 Rust

  A simple, fast and user-friendly alternative to 'find'

  For things that are commonly and almost-ideally represented as text files, there’s a lot of Rust based alternatives are faster and have more features than the old unix/GNU tools: ripgrep, fd, cw, and you can find more in this list.

• nushell

  81 26,378 6.3 Rust

  A new type of shell

  

  For lightly structured data, nushell (still pre-release) or jq/jaq are better.

• cw

  1 98 0.0 Rust

  A Rust wc clone (by Freaky)

  For things that are commonly and almost-ideally represented as text files, there’s a lot of Rust based alternatives are faster and have more features than the old unix/GNU tools: ripgrep, fd, cw, and you can find more in this list.

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• jaq

  11 878 0.0 Rust

  A jq clone focussed on correctness, speed, and simplicity

  For lightly structured data, nushell (still pre-release) or jq/jaq are better.

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