GETHOSTNAME(3P)		   POSIX Programmer's Manual	       GETHOSTNAME(3P)



PROLOG
       This  manual  page is part of the POSIX Programmer's Manual.  The Linux
       implementation of this interface may differ (consult the	 corresponding
       Linux  manual page for details of Linux behavior), or the interface may
       not be implemented on Linux.


NAME
       gethostname -- get name of current host

SYNOPSIS
       #include <unistd.h>

       int gethostname(char *name, size_t namelen);

DESCRIPTION
       The gethostname() function shall return the standard host name for  the
       current	machine.   The	namelen argument shall specify the size of the
       array pointed to by the name argument. The returned name shall be null-
       terminated,  except  that  if namelen is an insufficient length to hold
       the host name, then the returned name shall  be	truncated  and	it  is
       unspecified whether the returned name is null-terminated.

       Host names are limited to {HOST_NAME_MAX} bytes.

RETURN VALUE
       Upon successful completion, 0 shall be returned; otherwise, -1 shall be
       returned.

ERRORS
       No errors are defined.

       The following sections are informative.

EXAMPLES
       None.

APPLICATION USAGE
       None.

RATIONALE
       None.

FUTURE DIRECTIONS
       None.

SEE ALSO
       gethostid(), uname()

       The Base Definitions volume of POSIX.1-2008, <unistd.h>

COPYRIGHT
       Portions of this text are reprinted and reproduced in  electronic  form
       from IEEE Std 1003.1, 2013 Edition, Standard for Information Technology
       -- Portable Operating System Interface (POSIX),	The  Open  Group  Base
       Specifications Issue 7, Copyright (C) 2013 by the Institute of Electri-
       cal and Electronics Engineers,  Inc  and	 The  Open  Group.   (This  is
       POSIX.1-2008  with  the	2013  Technical Corrigendum 1 applied.) In the
       event of any discrepancy between this version and the original IEEE and
       The  Open Group Standard, the original IEEE and The Open Group Standard
       is the referee document. The original Standard can be  obtained	online
       at http://www.unix.org/online.html .

       Any  typographical  or  formatting  errors that appear in this page are
       most likely to have been introduced during the conversion of the source
       files  to  man page format. To report such errors, see https://www.ker-
       nel.org/doc/man-pages/reporting_bugs.html .



IEEE/The Open Group		     2013		       GETHOSTNAME(3P)