Provided by: manpages-dev_3.24-1ubuntu1_all bug

NAME

       getpt - open the pseudo-terminal master (PTM)

SYNOPSIS

       #define _GNU_SOURCE
       #include <stdlib.h>

       int getpt(void);

DESCRIPTION

       getpt() 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 VALUE

       getpt()  returns  an  open  file descriptor upon successful completion.
       Otherwise, it returns -1 and sets errno to indicate the error.

ERRORS

       getpt() can fail with various errors described in open(2).

VERSIONS

       getpt() is provided in glibc since version 2.1.

CONFORMING TO

       getpt() is glibc-specific; use posix_openpt(3) instead.

SEE ALSO

       grantpt(3), posix_openpt(3), ptsname(3), unlockpt(3), ptmx(4), pty(7)

COLOPHON

       This page is part of release 3.24 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/.