Man Getpt en anglais
GETPT(3)                   Linux Programmer's Manual                  GETPT(3)



 

NAME


       getpt - open the pseudo-terminal master (PTM)

 

SYNOPSIS


       #define _GNU_SOURCE
       #include 

       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 3.05 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)