table of contents
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¶
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¶
COLOPHON¶
This page is part of release 5.10 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/.
2019-03-06 | Linux |