should have three standard POSIX file descriptors, corresponding to the three standard streams:

Overview

In the traditional implementation of Unix, file descriptors index into a per-process ' maintained by the kernel, that in turn indexes into a system-wide table of files opened by all processes, called the '. This table records the mode with which the file (or other resource) has been opened: for reading, writing, appending, and possibly other modes. It also indexes into

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