On Tue, Dec 29, 2009 at 04:06:09PM -0500, Bob McConnell wrote: > MS-DOS 2.0 added subdirectories, I/O redirection, pipes, filters and a Ah, pipes... yeah, that was a fun implementation. Because DOS was single tasking the pipe actually wrote the data out to a temporary file, then when the generating program finished the consumer program would be started up to read from the temporary file. Slow as hell on floppies! And you'd better hope you had enough free space on the disk :-) -- rgds Stephen