Re: why is this result?

sed by default already print every line to the output. When you use the 'p'
command, you're telling sed to print each line again.

On Thursday, March 14, 2013, ishare wrote:

>
>  I have a file named by "1", its content is
>
>  xyz
>  123
>  dfd
>  xyzdfdf
>
>
>  when I typed :   sed 'p' 1 .
>  it print out :
> xyz
> xyz
> 123
> 123
> dfd
> dfd
> xyzdfdf
> xyzdfdf
>
> Obviously ,every line has been duplicated once ,why is this result?
>
>
>
> thanks!
>
>
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-- 
Aurelio | www.aurelio.net | @oreio


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