我如何并行grep [英] How do I grep in parallel

问题描述

我通常使用 grep -rIn pattern_str big_source_code_dir 来查找一些东西.但是 grep 不是并行的，我如何使它并行?我的系统有 4 个内核，如果 grep 可以使用所有内核，它会更快.

I usually use grep -rIn pattern_str big_source_code_dir to find some thing. but the grep is not parallel, how do I make it parallel? My system has 4 cores, if the grep can use all the cores, it would be faster.

推荐答案

如果您使用 HDD 来存储您正在搜索的目录，速度不会提高.硬盘驱动器几乎是单线程访问单元.

There will not be speed improvement if you are using a HDD to store that directory you are searching in. Hard drives are pretty much single-threaded access units.

但是如果你真的想做并行grep，那么本网站 给出了如何使用 find 和 xargs 进行操作的两个提示.例如

But if you really want to do parallel grep, then this website gives two hints of how to do it with find and xargs. E.g.

find . -type f -print0 | xargs -0 -P 4 -n 40 grep -i foobar

这篇关于我如何并行grep的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！