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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.1‐2017, <unistd.h>


COPYRIGHT
       Portions  of  this  text  are  reprinted  and  reproduced in electronic form from IEEE Std
       1003.1-2017, Standard for Information Technology -- Portable  Operating  System  Interface
       (POSIX),  The  Open Group Base Specifications Issue 7, 2018 Edition, Copyright (C) 2018 by
       the Institute of Electrical and Electronics Engineers, Inc and The  Open  Group.   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.opengroup.org/unix/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 .