Re: sub-process changing value available to parent process?

[Marco Ippolito]

> > > set -euo pipefail
> > As soon as I saw this, I decided to delete the entire thread.  This
> > is not salvageable.  This is a sign of grave incompetence and/or
> > ignorance.  Combined with "I know the answer is eval but I want a
> > different answer", it points to intransigent stubbornness.
>
> Sorry I probably miss some references here.

A reference was indeed missing.

Among others, many of which from Greg himself, I could find:
https://mywiki.wooledge.org/BashFAQ/105

Explore from that site for more.

Greg may want to expand with additional links.