Describe What File Descriptors Are, and Then List Three That

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The Answer is Command input and output are represented by labels known as file descriptors. For each command that can be manipulated by the BASH shell, there are three file descriptors:
Standard input (stdin)
Standard output (stdout)
Standard error (stderr)
Standard input (stdin) refers to the information processed by the command during execution; this often takes the form of user input typed on the keyboard. Standard output (stdout) refers to the normal output of a command, whereas standard error (stderr) refers to any error messages generated by the command. Both stdout and stderr are displayed on the terminal screen by default.

Describe What File Descriptors Are, and Then List Three That

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