Asked at forums.androidcentral.com 2014-11-30:

Just replaced my dying HTC G1 with  a  new  HTC  ONE  M8,  found  the
settings  that  make  me a "developer" (whatever that might mean ;-),
but I've had problems finding one important thing that the G1 had:  A
normal  "terminal"  app that lets me use it as on ordinary unix/linux
box, type "cd", "ls", "vi", and the other usual commands.

Googling doesn't help.  Asking about obvious  things  like  "HTC  ONE
terminal"  gets  me lots of stuff on rooting the gadget, resetting it
to factory, etc., which might all  be  useful  and  interesting,  but
doesn't help me install a terminal app. Looking around in app sources
finds similar things, but nothing that looks like a terminal window.

I'm guessing that there is such a thing that works on  the  HTC  One.
Why does searching for it turn up all these other things, but nothing
that's a working terminal app? With the G1, the same keywords turn up
lists  of appropriate apps.  Anyone know how I might go about finding
such a thing for my new gadget?

(Asking about "HTC ONE terminal" at forums.androidcentral.com led  me
to  this forum, which illustrates the problem.  Terminals aren't just
tools for rooting computers, so why didn't I find what I was  looking
for here?  ;-)

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A day later, several partial  answers  had  included  the  clue  that
"play.google.com" was the "store" URL. There were several icons on my
phone that led to sub-sites with specialties like games,  movies  and
music, but none that led to the basic site.