isatty#
Synopsis#
#include <unistd.h>
int isatty(int fildes);
int isatty(int fildes);
Status#
Partially implemented
Conformance#
IEEE Std 1003.1-2017
Description#
The isatty()
function shall test whether fildes, an open file descriptor, is associated with a terminal
device.
Return value#
The isatty()
function shall return 1
if fildes is associated with a terminal; otherwise, it shall return 0
and
may set errno to indicate the error.
Errors#
The isatty()
function may fail if:
EBADF
- The fildes argument is not a valid open file descriptor.ENOTTY
- The file associated with the fildes argument is not a terminal.
Tests#
Untested
Known bugs#
None