如何垂直拆分250k列的文件? [英] How to split a file with 250k columns vertically?

问题描述

我需要根据大小(优选)或列数将250k的文件拆分为几个(〜5)块.我知道split命令用于按行拆分，但是不知道是否有任何类似的功能可以按列拆分. 我文件中的列数不是偶数，因此块不能具有相等的列数.

I need to split a file with 250k based on the size (preferable) or number of columns to several (~5) chunks. I am aware of split command for row-wise splitting, but don't know if there is any similar function to split column-wise. The number of columns in my file are not even, so the chunks cannot have equal number of columns.

输入:

AA BB CC DD EE FF GG HH II JJ KK LL MM
NN OO PP QQ RR SS TT UU VV WW XX YY ZZ

所需的输出:

File1

AA BB CC DD        
NN OO PP QQ

File2

EE FF GG HH
RR SS TT UU

File3

II JJ KK LL MM
VV WW XX YY ZZ 

推荐答案

使用awk，您可以将n调整为所需的数字.

Using awk, you can adjust n to the number you expect.

awk '{for (i=1;i<=NF;i++)
         printf (i%n==0||i==NF)?$i RS:$i FS > "File" int((i-1)/n+1) ".txt"
      }' n=5 file

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