[TUHS] early Unix terminals

Lars Brinkhoff via TUHS tuhs at tuhs.org
Thu May 21 16:02:47 AEST 2026


Clem Cole wrote:
> There is great story about this.  Control-T came from Tenex

And Tenex got it from BBN LISP on the 940.

> the first TOPS-20 folks customized (hacked) OS so that depending what
> the load average, control-T returned different messages telling you a
> bit more than “Running.”  So instead of saying “Running” it started
> saying “Jogging”, “Walking” or “Crawling” but the administration got
> upset when it was most often stating “Dying.”

On ITS, the system monitor PEEK reports the speed of a running job
with the fastest being WARP, then ZOOM, FLY, RUN, WALK, TENEX, and
the slowest being MULTIX.  (The latter two used to be CRAWL and CREEP.)

Follow-ups should go to COFF.


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