Getting a text file rid of all superfluous blank lines

[Paul Howarth]

Paul Smith wrote:
> On 11/30/05, Paul Howarth <paul at city-fan.org> wrote:
> 
>>>Taking a text file, how can one eliminate at once all superfluous blank lines?
>>
>>What is your definition of a "superfluous blank line"? Is that all blank
>>lines, or all consecutive blank lines where the number is more than one?
>>
>>If it's the latter, you may find "more -s filename" to your liking.
> 
> 
> Thanks, Paul. I mean "all consecutive blank lines where the number is
> more than one". Furthermore, I mean how to delete those blank lines
> from the file.

$ more -s file > file.new
$ mv file.new file

Paul