linux读书笔记9

Given a text file file.txt, transpose its content.

You may assume that each row has the same number of columns and each field is separated by the ’ ’ character.

For example, if file.txt has the following content:

name age
alice 21
ryan 30

Output the following:

name alice ryan
age 21 30
ans:
awk ‘{for(i=1;i<=NF;i++){if(word[i]==”“){word[i]=$i}else{word[i]=word[i]" "$i}}}END{for(i=1;i<=NF;i++)print word[i]}’ file.txt