Re: newbie question about removing un needed extra lines
 

Scott Taylor wrote:
>
> I've just started learning perl, and had two questions. One, what is
> the best way to open a text file and remove all of the empty lines?
> Example:
>
> a@a.com
> b@b.com
>
> c@c.com
>
> d@d.com
>
> should turn into
>
> a@a.com
> b@b.com
> c@c.com
> d@d.com
>
>
> Also, what is the best source to learn perl? I've heard that the
> O'Reilly Books are supposed to be very helpful. Can anyone recommend a
> good web source with tutorials for newbies?
>
> Thanks in advance,
>
> Scott Taylor
>

perl -i -n -e 'print if ! /^$/;'

I'll leave it up to you to look at the perl docs for an explaination.

Look at man perl, man perlrun, man prelregquick, and man perlregtut.