27 Sep
2017
27 Sep
'17
4:02 a.m.
On Tue, Sep 26, 2017 at 09:37:13PM -0400, Chet Ramey wrote:
On 9/26/17 8:58 PM, Dave Horsfall wrote:
OK, I'm gonna be that guy because I've learned when I ask, I learn.
You answered but I didn't get any insight. Why have an extra fd talking
to the tty? bash has 0, 1, 2 talking to it. If it were redirected
would it have 255 pointing to some random tty? I don't get the reason
for the extra fd.
On Tue, 26 Sep 2017, Grant Taylor wrote:
Yeah, but still doesn't answer the question, application-wise.?? I'm gonna
guess (without digging through the source) that it's a "dup2(0, 255)*" or
something, to "save" a copy of stdin/out/err for some obscure reason.
I already answered this. Exactly;
why 255 of all things?
High order of 8 bits??? (Assuming low order starts at 0.)