Combine all the columns of two files using bash

Question

I have two files

A B C D E F
B D F A C E
D E F A B C

and

1 2 3 4 5 6
2 4 6 1 3 5
4 5 6 1 2 3

I want to have something like this:

A1 B2 C3 D4 E5 F6
B2 D4 F6 A1 C3 E5
D4 E5 F6 A1 B2 C3

I mean, combine both files pasting the content of all columns.

Thank you very much!

Answer 1

Here's a bash solution:

paste -d' ' file1 file2 \
| while read -a fields ; do
      (( width=${#fields[@]}/2 ))
      for ((i=0; i<width; ++i)) ; do
          printf '%s%s ' "${fields[i]}" "${fields[ i + width ]}"
      done
      printf '\n'
done

• paste outputs the files side by side.
• read -a reads the columns into an array.
• in the for loop, we iterate over the array and print the corresponding values.

Answer 2

您能否尝试以下操作，尝试在此处使用xargs + paste组合来获得一些乐趣。

xargs -n6 < <(paste -d'\0' <(xargs -n1 < Input_file1) <(xargs -n1 < Input_file2))