[TUHS] What was your "Aha, Unix!" moment?

[Larry McVoy]

On Sun, Oct 20, 2019 at 07:31:55PM -0700, Ken Thompson via TUHS wrote:
> i was writing the small utilities for the first
> pdp-11 unix. (rm ls date ....)
> 
> so, cd was next.
> 
> % pwd
> /usr/ken
> % cd /tmp
> % pwd
> /usr/ken
> 
> Aha!

I'm old and slow, had to think about that one.  Aha indeed!