Re: edit a file in place

["Matt Shields-4" <user=23@nabble.blu.org>]

 On Wed, Aug 6, 2008 at 12:52 PM, Derek Martin <[hidden email]>wrote: 

> A coworker asked me if I could think of any Linux/Unix utility which 
> would allow him to change one line of a file in place (i.e. without 
> creating a temporary file a la sed and overwriting the old version a C 
> program to do it -- you could, for example, mmap the file, move the block 
> after the line to the right place (depending on whether the 
> new line was longer or shorter), write the new line, and truncate the 
> file if necessary.  This, of course, is way too much trouble to make 
> it worthwhile. :) 
> 
> While personally I have no problem using temp files, I did wonder if 
> there wasn't already something which could do this easily...  Anyone 
> have any ideas? 
> 
> -- 
> Derek D. Martin    http://www.pizzashack.org/   GPG Key ID: 0xDFBEAD02 
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