[root@localhost awk]# seq |xargs -n  > file

[root@localhost awk]# seq   - |xargs -n  > file1

[root@localhost awk]# cat file

[root@localhost awk]# cat file1

[root@localhost awk]# cat file |awk '{print $1}'

[root@localhost awk]# cat file1 |awk '{print $2}'

[root@localhost awk]# cat file |awk '{print $1}'>file3

[root@localhost awk]# cat file1 |awk '{print $2}'>file4

[root@localhost awk]# paste file3 file4

[root@localhost awk]# paste file3 file4|tr "\t" " "

[root@localhost awk]# paste file3 file4|tr "\t" " ">file5

[root@localhost awk]# cat file5

[root@localhost awk]# awk '' file

[root@localhost awk]# awk '' file1

[root@localhost awk]# awk '' file1 file1

[root@localhost awk]# awk '{print NR}' file file1

[root@localhost awk]# awk '{print NR,FNR}' file file1

[root@localhost awk]# 

[root@localhost awk]# awk 'NR==FNR{a[NR]=$1}NR!=FNR{print a[FNR],$2}' file file1

[root@localhost awk]#