gethostname

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



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 Electrical
       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.kernel.org/doc/man-pages/reporting_bugs.html .



IEEE/The Open Group                   2013                   GETHOSTNAME(3POSIX)