On Wed, 11 Aug 2010 18:49:26 -0700, RG wrote: > This doesn't explain why "cat | cat" when run interactively outputs > line-by-line (which it does). STDIN to the first cat is a TTY, but the > second one isn't.
GNU cat doesn't use stdio, it uses read() and write(), so there isn't any buffering. For more complex programs, using unbuffered I/O may not be practical, due to either code complexity or performance. -- http://mail.python.org/mailman/listinfo/python-list
