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GETPT(3)                   Linux Programmer's Manual                  GETPT(3)

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  else-
       where 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 3.25 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/.

GNU                               2008-06-14                          GETPT(3)
 

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Gedruckt am: 14.12.2017 11:13 GMT+0100 (2017-12-14T11:13:17+01:00)