Re: to remove leading and trailing blank lines

Here is another way to remove leading and trailing blank lines:

--------------------------------
$ cat test.txt


non-blank 1
non-blank 2

non-blank 3


--------------------------------


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$ sed -n '/[^ ]/,$ p' test.txt | tac | sed -n '/[^ ]/,$ p' | tac
non-blank 1
non-blank 2

non-blank 3
--------------------------------

This assumes "blank line" means "line has some character other than blank".

Daniel

PS - Unfortunately, the yahoo groups web interface defaults to send the message to the previous poster, not to sed-users group. At least that's how it behaves when I use it. That's probably what happened.

--- In [email protected], Davide Brini <dave_br@...> wrote:
>
> On Mon, 01 Jul 2013 10:53:37 -0000, "contact2vikas"
> <contact2vikas@...> wrote:
> 
> > Thanks Dave,
> > Its working fine now. 
> > 
> > I am want to avoide creating sed file. Is it possible give me one or two
> > command from I can run from command line.
> 
> Please keep replies on the list. The command I used can be directly used on
> the command line, there's no need to create a file.
> 
> -- 
> D.
>