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
SVr4, 4.3BSD, POSIX.1-2001.
SEE ALSOfstat(2), ttyname(3)Linux 1995-04-20 ISATTY(3)