Linux and UNIX Man Pages

Linux & Unix Commands - Search Man Pages

isatty(3) [centos man page]

ISATTY(3)						     Linux Programmer's Manual							 ISATTY(3)

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 3.53 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/. Linux 2008-12-03 ISATTY(3)

Check Out this Related Man Page

ISATTY(3)						     Linux Programmer's Manual							 ISATTY(3)

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 specifies the error ENOTTY for this case. ATTRIBUTES
For an explanation of the terms used in this section, see attributes(7). +----------+---------------+---------+ |Interface | Attribute | Value | +----------+---------------+---------+ |isatty() | Thread safety | MT-Safe | +----------+---------------+---------+ CONFORMING TO
POSIX.1-2001, POSIX.1-2008, SVr4, 4.3BSD. SEE ALSO
fstat(2), ttyname(3) COLOPHON
This page is part of release 4.15 of the Linux man-pages project. A description of the project, information about reporting bugs, and the latest version of this page, can be found at https://www.kernel.org/doc/man-pages/. Linux 2015-08-08 ISATTY(3)
Man Page

Featured Tech Videos