getpt man page on CentOS

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

NAME
       getpt - open the pseudo-terminal master (PTM)

SYNOPSIS
       #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.

CONFORMING TO
       getpt() is specific to GNU Libc.

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

PTY Control			  2002-10-09			      GETPT(3)
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