将两个文件粘贴成一个文件

[root@lvm ~]# cat 1.txt
123
456
789
[root@lvm ~]# cat 2.txt
maoyuange
zhuyuanpo
luyujiang
[root@lvm ~]# paste 1.txt 2.txt >3.txt #将2个文件粘贴成一个文件
[root@lvm ~]# cat 3.txt
123 maoyuange
456 zhuyuanpo
789 luyujiang