4 Mar
2020
4 Mar
'20
12:48 p.m.
Dave Horsfall <dave(a)horsfall.org> wrote:
On Wed, 4 Mar 2020, Tyler Adams wrote:
> > These go all the way back to v7 unix, where ls has an option to
> > reverse the sort order (which could have been done by passing the
> > output to tac).
>
> Good point. Why was this done in v7 unix and why wasn't it thrown out?
There was no tac in V7 Unix. It was first posted to USENET, I don't
know by who, and picked up by Linux and *BSD.
And speaking of "tac" (which I never saw), I
couldn't think of a single
use for "rev" (although no doubt I'll now get told).
It's useful for reading Hebrew sent in plain text email :-). Hebrew is
read right to left but stored in physical order (left to right) in files.
Arnold