CR/LF problems after upgrade

Cary Jamison
Wed Jan 17 17:36:00 GMT 2007

Buchbinder, Barry (NIH/NIAID) [E] wrote:
> From: Luke Kendall
>> <philosophy>
>> I wonder how many centuries of human endeavour has been
>> absorbed because of the decision to use CR+LF as line
>> endings in DOS?
>> </philosophy>
> <OT>
> To be fair, \r\n seems to go back to Gary Kildall's CP/M.
> </OT>

As far as I know, Unix is actually the oddball, using only a single 
character to represent two actions on the old ttys, a carriage return 
followed by a line feed.  All oses I used before I was exposed to Unix had 
<cr><lf> line endings - these included various other mini and microcomputer 
oses of the late 70s early 80s era.

Note that it was important to send the carriage return *before* the line 
feed, to give the carriage head more time to actually return all the way to 
the start of the line.  If you did the line feed before the carriage return, 
the next character after the carriage return could start printing while the 
carriage was still returning!  (Actually, this is only true of really old 
style KSRs that didn't have much buffering, etc., but shows the history of 

And now that I'm way off topic, I'll just add that if anyone else wants to 
continue reminiscing, lets take it to -talk.


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