Linux 命令： paste

dewan ~/Downloads/b% cat 1  
1
2
3
dewan ~/Downloads/b% cat 2
a
b
c
dewan ~/Downloads/b% paste 1 2
1       a
2       b
3       c
dewan ~/Downloads/b% paste -d , 1 2
1,a
2,b
3,c
dewan ~/Downloads/b% paste -s 1 2  
1       2       3
a       b       c