[TUHS] FD 2

[Jaap Akkerhuis via TUHS]

> On 21 Jan 2023, at 19:27, Clem Cole <clemc at ccc.com> wrote:
> 
> 
> 
> On Sat, Jan 21, 2023 at 12:34 PM Warner Losh <imp at bsdimp.com <mailto:imp at bsdimp.com>> wrote:
>> It looks to be a mixed bag in 5th edition. Cc, ac, comm and find all printf the errors. Diff uses writes to fd 2. I didn't catalog further, but this kinda looks like a developing convention, not yet fully realized. .
> Fair enough and that makes sense...
> ᐧ

I do remember that pr -p actually read from FD 2. It probably still does.
Very useful to align paper in the printer.

	jaap

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