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)