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[TUHS] History of top
The MIT ~PWB1 system had a thing called 'dpy', probably written at MIT based on 'ps' (and no doubt inspired by ITS' PEEK), which had similar functionality.Fri May 25 11:44:10 2018 - permalink -
Seems like it never escaped, though. Man page and source here:
http://ana-3.lcs.mit.edu/~jnc/tech/unix/man1/dpy.1
http://ana-3.lcs.mit.edu/~jnc/tech/unix/s1/dpy.c- https://minnie.tuhs.org//pipermail/tuhs/2018-May/013856.html