Re^2: replace multiple newline characters

Replies are listed 'Best First'.
Re^3: replace multiple newline characters by haukex (Archbishop) on May 15, 2018 at 09:48 UTC
Even shorter :-) (Update: Sorry, not quite the same, see replies.) `$ perl -lp000e1 input.txt >output.txt` [download] <Reveal this spoiler or all in this thread>	[reply] [d/l] [select]
Re^4: replace multiple newline characters by hippo (Archbishop) on May 15, 2018 at 09:59 UTC
Shorter, yes, but it looks like you've re-introduced the "input-file is small enough to be read into memory" constraint. Or have I missed something?	[reply]
Re^5: replace multiple newline characters by haukex (Archbishop) on May 15, 2018 at 10:07 UTC
Shorter, yes, but it looks like you've re-introduced the "input-file is small enough to be read into memory" constraint. Or have I missed something? Hm, good point, I guess in my excitement over the nice short oneliner I sort of did. `-000`* turns on paragraph mode, so if the file contains lots of short "paragraphs" with blank lines in between, it'll be fine, but if the file contains, say, a block of several MB of non-blank lines, a single blank line, and another huge paragraph, then yes, you're right, my solution isn't that great. * perlrun is a little unclear whether it's `-00` or `-000`, both seem to work.	[reply] [d/l] [select]