Norman Wilson wrote:
The earliest UNIX Programmer's Manual to describe
shell
pipelines is the Third Edition, February 1973.
BTW: As the manual source isn't trivial to process on many new systems,
i had converted sh(1) from V3, V4, V6, PWB and V7 into html:
<http://www.uni-ulm.de/~s_smasch/various/bourne/#predecessors>
Sven