[TUHS] Command line options and complexity

[Warner Losh]

On Thu, Mar 5, 2020 at 2:51 PM Dave Horsfall <dave at horsfall.org> wrote:

> On Wed, 4 Mar 2020, Ken Thompson via TUHS wrote:
>
> > do i get a prize:
> > ls -tj
> > /bin/ls: illegal option -- j
> > usage: ls [-ABCFGHLOPRSTUWabcdefghiklmnopqrstuwx1] [file ...]
>
> Another candidate for option-cleansing...  Interesting; I get different
> options with the Mac and FreeBSD:
>
> Mac:
>
>      usage: ls [-ABCFGHLOPRSTUWabcdefghiklmnopqrstuwx1] [file ...]
>
> FreeBSD:
>
>      usage: ls [-ABCFGHILPRSTUWZabcdfghiklmnopqrstuwxy1,] [-D format]
> [file ...]
>
> So FreeBSD has added up "y,D:" (in getopt(3)-speak); my eyes are burning...
>

FreeBSD wouldn't need -, if there were a good filter to add , to large
numbers...  Some of the proliferation of options has been due to a lack of
proper building-blocks....

Warner
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