[TUHS] Command line options and complexity
arnold at skeeve.com
arnold at skeeve.com
Wed Mar 4 16:48:55 AEST 2020
Dave Horsfall <dave at 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
More information about the TUHS
mailing list