awk 两个文件进行合并，相应位置的数字求和

[[email protected] tmp]# cat 1.txt

1 2 3

4 5 6

[[email protected] tmp]# cat 2.txt

11 22 33

44 55 66

[[email protected] tmp]# awk ‘{for(i=1;i<=NF;i++) a[i]=$i; getline < "1.txt" ;for (i=1;i<=NF;i++) printf a[i]+$i " " ;printf "\n" }‘ 2.txt

12 24 36

48 60 72

[[email protected] tmp]#