如何将大tar.gz文件的内容通过管道传输到STDOUT? [英] how to pipe contents of large tar.gz file to STDOUT?

问题描述

我有一个large.tar.gz文件，其中包含大约一百万个文件，其中大约1/4是html文件，我想解析其中每个html文件的几行.

I have a large.tar.gz file containing about 1 million files, out of which about 1/4 of them are html files, and I want to parse a few lines of each of the html files within.

我想避免不得不将大型large.tar.gz的内容提取到文件夹中，然后解析html文件，相反，我想知道如何将large.tar.gz中html文件的内容直接传递到STDOUT以便我可以从他们那里grep/解析出我想要的信息?

I want to avoid having to extract the contents of large large.tar.gz into a folder and then parse the html files, instead I would like to know how can I pipe the contents of the html files in the large.tar.gz straight to STDOUT so that I can grep/parse out the information I want from them?

我认为一定有一些魔术，例如:

I presume there must be some magic like:

tar -special_flags large.tar.gz | grep_only_files_with_extension html | xargs -n1 head -n 99999 | ./parse_contents.pl -

有什么想法吗?

推荐答案

与GNU tar一起使用，以将tgz提取到stdout:

Use this with GNU tar to extract a tgz to stdout:

tar -xOzf large.tar.gz --wildcards '*.html' | grep ...

---

-O, --to-stdout:将文件提取到标准输出

-O, --to-stdout: extract files to standard output

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