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The usual way to get and set terminal modes is with the functions described
in 17.4 Terminal Modes. However, on some systems you can use the
BSD-derived functions in this section to do some of the same thing. On
many systems, these functions do not exist. Even with the GNU C library,
the functions simply fail with
ENOSYS with many
kernels, including Linux.
The symbols used in this section are declared in `sgtty.h'.
gtty sets *attributes to describe the terminal attributes
of the terminal which is open with file descriptor filedes.
This function sets the attributes of a terminal.
stty sets the terminal attributes of the terminal which is open with
file descriptor filedes to those described by *filedes.
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