Re: GROUPS

[Chet Ramey]

On 8/13/21 10:32 AM, Greg Wooledge wrote:
> On Fri, Aug 13, 2021 at 10:10:42AM -0400, Chet Ramey wrote:
> > As long as you stick to things POSIX standardizes. Relevant here, the
> > standard even includes a list of variables you should avoid using because
> > various shells and applications use them.
>
> Just out of curiosity, where is that?  It's not under section
> 2.5.3 Shell Variables, which is where I looked first.
>
> The closest thing I could find is a section in the Rationale that
> describes some variables that are no longer covered by the standard,
> but either used to be, or are commonly used as extensions:
>
> https://pubs.opengroup.org/onlinepubs/9699919799/xrat/V4_xcu_chap02.html#tag_23_02_05_03
>
> Is there another section that I've missed?

https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap08.html#tag_08

"It is unwise to conflict with certain variables that are frequently
exported by widely used command interpreters and applications:"


--
``The lyf so short, the craft so long to lerne.'' - Chaucer
                 ``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, UTech, CWRU    chet@case.edu    http://tiswww.cwru.edu/~chet/