What is stdout in Linux terminal?

Stdout, also known as standard output, is the default file descriptor where a process can write output. In Unix-like operating systems, such as Linux, macOS X, and BSD, stdout is defined by the POSIX standard. Its default file descriptor number is 1. In the terminal, standard output defaults to the user's screen.

How to read output from terminal device?

(There's no standard way, given a terminal device, to read the output that it displays or to inject input into it.) When you run cat /dev/stdout, that does exactly the same thing as cat /dev/stdin or cat /dev/stderr, because these three file descriptors are connected to the same file: it tells cat to read from the terminal.

What is stdout in Python?

A built-in file object that is analogous to the interpreter’s standard output stream in Python. stdout is used to display output directly to the screen console. Output can be of any form, it can be output from a print statement, an expression statement, and even a prompt direct for input. By default, streams are in text mode.

What is stdin stdout and stderr in Linux?

stdin, stdout and stderr 1 stdin: Stands for standard input. It takes text as input. 2 stdout: Stands for standard output. The text output of a command is stored in the stdout stream. 3 stderr: Stands for standard error. Whenever a command faces an error, the error message is stored in this stream.

How does Terminal read from stdout and draw the text on-screen?

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I have a general question about how the terminal and processes work.

From any process, if I write to stdout (i.e. file descriptor 2), it gets drawn on the terminal window. My question is, how is this actually implemented? Is stdout an actual 'dummy' file somewhere that the terminal keeps on reading from and drawing the content on screen? Or is there some kind of IPC between the process/stdout stream and the Terminal?

Note that when I say terminal, I mean some general GUI terminal/console, such as Terminal on the Mac.

P.S. If this question is unclear, let me know and I will happily try to explain again :)

Thanks!

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How does Terminal read from stdout and draw the text on-screen?

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