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Livre :
Expressions régulières,
Syntaxe et mise en oeuvre :

ISBN : 978-2-7460-9712-4
EAN : 9782746097124
(Editions ENI)

GNU/Linux	Debian 6.0.6 (Squeeze)
	isatty(3)

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ISATTY

NAME
SYNOPSIS
DESCRIPTION
RETURN VALUE
ERRORS
CONFORMING TO
SEE ALSO
COLOPHON

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NAME

isatty − test whether a file descriptor refers to a terminal

SYNOPSIS

#include <unistd.h>

int isatty(int fd);

DESCRIPTION

The isatty() function tests whether fd is an open file descriptor referring to a terminal.

RETURN VALUE

isatty() returns 1 if fd is an open file descriptor referring to a terminal; otherwise 0 is returned, and errno is set to indicate the error.

ERRORS

	EBADF		fd is not a valid file descriptor.
	EINVAL		fd refers to a file other than a terminal. POSIX.1-2001 specifies the error ENOTTY for this case.

CONFORMING TO

SVr4, 4.3BSD, POSIX.1-2001.

SEE ALSO

fstat(2), ttyname(3)

COLOPHON

This page is part of release 3.27 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/.

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isatty(3)