input1
x
x
input2
y
x
x
z
join input1 input2>>output
ouput
x
x
wanted output
ouput
x x
x x
y
z
use paste command.
$ paste input1 input2
x y
x x
x
z
If you want the output sorted, use sort first and then give it as input to paste.
Hey you misunderstood the problem. in the wanted output x is matching with x see. paste just prints the two inputs side by side.
I think
join -j1 -v1 input1 input2
could do some thing. Now its working fine