Joining consecutive lines

Hi *,

Can anyone tell me if there is an unix utility to join two consecutive lines ?

ex:

$ cat file
a
1
b
2
c
3

output should be :
a 1
b 2
c 3

Thanks,
14341

use editor like vim or emacs (i use this) can't think of any direct utility from shell

Quote:

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Originally Posted by RockyMarrone

use editor like vim or emacs (i use this) can't think of any direct utility from shell

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kidding uh!

Dude i don't want to do it manually.

As a work around a c/cpp program can be written which can do the job. But i just want to know if i can achieve this with inbuilt unix tools or not.

Thanks,
14341

Is there any possibility to solve the above problem using awk?