按行号矢量分割文件 [英] Split file by vector of line numbers

问题描述

我有一个大文件，大约10GB.我有一个行号向量，我想用它来分割文件.理想情况下，我想使用命令行实用程序来完成此操作.作为正则表达式:

I have a large file, about 10GB. I have a vector of line numbers which I would like to use to split the file. Ideally I would like to accomplish this using command-line utilities. As a regex:

文件:

1 2 3 
4 5 6
7 8 9 
10 11 12 
13 14 15
16 17 18

行号向量:

2 5

所需的输出:

文件1:

1 2 3 

文件2:

4 5 6
7 8 9 
10 11 12 

文件3:

13 14 15
16 17 18

推荐答案

这可能对您有用:

csplit -z file 2 5

或者如果您想使用正则表达式:

or if you want regexp:

csplit -z file /2/ /5/

使用默认值，输出文件将被命名为 xxnn ，其中 nn 从 00 开始并以1递增.

With the default values, the output files will be named xxnn where nn starts at 00 and is incremented by 1.

-z 选项可防止清空文件.

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