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NAME
       isatty - does this descriptor refer to a terminal


SYNOPSIS
       #include <unistd.h>

       int isatty(int desc);


DESCRIPTION
       returns  1  if  desc is an open file descriptor connected to a terminal
       and 0 otherwise.


CONFORMING TO
       SVr4, 4.3BSD, POSIX.1-2001.


SEE ALSO
       fstat(2), ttyname(3)


COLOPHON
       This page is part of release 2.77 of the Linux  man-pages  project.   A
       description  of  the project, and information about reporting bugs, can
       be found at http://www.kernel.org/doc/man-pages/.