GETPT(3) Linux Programmer's Manual GETPT(3)NAMEgetpt - open the pseudo-terminal master (PTM)
SYNOPSIS
#include <stdlib.h>
int getpt(void)DESCRIPTIONgetpt() opens a pseudo-terminal master and returns its file descriptor.
It is equivalent to open("/dev/ptmx",O_RDWR|O_NOCTTY) on Linux systems,
though the pseudo-terminal master is located elsewhere on some systems
that use GNU Libc.
RETURN VALUEgetpt() returns an open file descriptor upon successful completion.
Otherwise, it returns -1 and sets errno to indicate the error.
CONFORMING TOgetpt() is specific to GNU Libc.
SEE ALSOgrantpt(3), ptsname(3), posix_openpt(3), unlockpt(3), ptmx(4), pty(7)PTY Control 2002-10-09 GETPT(3)