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The TTY demystified Real teletypes in the 1940s. The TTY subsystem is central to the design of Linux, and UNIX in general. Unfortunately, its importance is often overlooked, and it is difficult to find good introductory articles about it. I believe that a basic understanding of TTYs in Linux is essential for the developer and the advanced user. Beware, though: What you are about to see is not particularly elegant. In fact, the TTY subsystem while quite functional from a user s point of view is a twisty little mess of special cases. To understand how this came to be, we have to go back in time.

United statesDavid mackenzieDavid mckenzieIzach dennisFede tulaJesus christJim fergussonDouglas adamsLinus akessonTermcap terminfoRuslan poddubnyDavid lindsayUniversal asynchronous receiverSystem administratorMac osxEight megabytes and constantly swapping