table of contents
other sections
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¶
CONFORMING TO¶
SVr4, 4.3BSD, POSIX.1-2001.
SEE ALSO¶
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/.
2008-12-03 | Linux |