isatty man page on Solaris

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isatty(3C)		 Standard C Library Functions		    isatty(3C)

NAME
       isatty - test for a terminal device

SYNOPSIS
       #include <unistd.h>

       int isatty(int fildes);

DESCRIPTION
       The isatty() function tests whether fildes, an open file descriptor, is
       associated with a terminal device.

RETURN VALUES
       The isatty() function returns 1 if fildes is associated with  a	termi‐
       nal; otherwise it returns 0 and may set errno to indicate the error.

ERRORS
       The isatty() function may fail if:

       EBADF	       The  fildes  argument is not a valid open file descrip‐
		       tor.

       ENOTTY	       The fildes argument is not associated with a terminal.

USAGE
       The isatty() function does not necessarily indicate that a human	 being
       is available for interaction via fildes. It is quite possible that non-
       terminal devices are connected to the communications line.

ATTRIBUTES
       See attributes(5) for descriptions of the following attributes:

       ┌─────────────────────────────┬─────────────────────────────┐
       │      ATTRIBUTE TYPE	     │	    ATTRIBUTE VALUE	   │
       ├─────────────────────────────┼─────────────────────────────┤
       │Interface Stability	     │Standard			   │
       ├─────────────────────────────┼─────────────────────────────┤
       │MT-Level		     │MT-Safe			   │
       └─────────────────────────────┴─────────────────────────────┘

SEE ALSO
       ttyname(3C), attributes(5), standards(5)

SunOS 5.10			  24 Jul 2002			    isatty(3C)
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