Visit Our UNIX and Linux User Community

Linux and UNIX Man Pages

Test Your Knowledge in Computers #456
Difficulty: Easy
An application programming interface (API) is a graphical-based interface for viewing client-server data.
True or False?
Linux & Unix Commands - Search Man Pages

isatty(3) [redhat man page]

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

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 descriptor connected to a terminal and 0 else. CONFORMING TO
SVID, AT&T, X/OPEN, BSD 4.3 SEE ALSO
fstat(2), ttyname(3) Linux 1995-04-20 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)

Featured Tech Videos