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Point of clarification - the file descriptors are zero-based - same as
in Unix, etc. There is always a zero-value descriptor.
In interactive jobs, stdin = 0, stdout = 1, and stderr = 2 - always. In
batch jobs, there is no display device and no entry device (keyboard),
so none of these FDs are set. The FDs start at 0.
I have seen this repeatedly when debugging a sockets application running
in batch and interactive jobs.
This brings up a thought - the FD is just an integer - it could be
stored in code at each open, whether of a file or a socket.
On 6/6/2013 7:16 PM, CRPence wrote:
-snip-
Ignoring the possibility of a zero-value descriptor, ignoring any
special processing that might occur for zero to three
-snip-
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