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Is this question on topic on unix.se.com:

what's the application/use of unifying the two API[console API and file API] and providing such a feature[copy file from one terminal to another]?

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    This seems like the last sentence of a paragraph; without the rest of it I don't really know what you're talking about
    – Michael Mrozek
    Oct 13 '13 at 19:56
  • @MichaelMrozek if you check the previous comment to the link provided the context would be clear. of course I would be more elaborate if it is on topic here.
    – Bleeding Fingers
    Oct 13 '13 at 20:05
  • Oh, thanks; I didn't notice the link the first time
    – Michael Mrozek
    Oct 13 '13 at 20:33
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I think it's fine, although I would definitely explain the whole context in the question. Something like:

It was explained in this Stack Overflow thread that each logical terminal has a "pseudo-terminal", and that writing to one:

$ cat some-file.txt > /dev/ttys002

will cause the data to appear in that terminal window. What's the reason for providing a file-like API to terminal windows? Is there any use case where this is helpful?

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