1、测试数据

root@PC1:/home/test2# ls
a.txt
root@PC1:/home/test2# cat a.txt
1 2 3 4 5 6 7 8
e a w d g e l i
d g e g j j m n

 

2、将连续的两列数据转换成一列数据

root@PC1:/home/test2# cat a.txt
1 2 3 4 5 6 7 8
e a w d g e l i
d g e g j j m n
root@PC1:/home/test2# awk '{for(i = 1; i <= NF; i = i + 2) {printf("%s ", $i)}{printf("\n")}}' a.txt > top.txt
root@PC1:/home/test2# cat top.txt
1 3 5 7
e w g l
d e j m
root@PC1:/home/test2# awk '{for(i = 2; i <= NF; i = i + 2) {printf("%s ", $i)}{printf("\n")}}' a.txt > bottom.txt
root@PC1:/home/test2# cat bottom.txt
2 4 6 8
a d e i
g g j n
root@PC1:/home/test2# cat top.txt bottom.txt > result.txt
root@PC1:/home/test2# cat result.txt
1 3 5 7
e w g l
d e j m
2 4 6 8
a d e i
g g j n