gethostname(3p) — Linux manual page

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

PROLOG         top

       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         top

       gethostname — get name of current host

SYNOPSIS         top

       #include <unistd.h>

       int gethostname(char *name, size_t namelen);

DESCRIPTION         top

       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         top

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

ERRORS         top

       No errors are defined.

       The following sections are informative.

EXAMPLES         top

       None.

APPLICATION USAGE         top

       None.

RATIONALE         top

       None.

FUTURE DIRECTIONS         top

       None.

SEE ALSO         top

       gethostid(3p), uname(3p)

       The Base Definitions volume of POSIX.1‐2017, unistd.h(0p)

COPYRIGHT         top

       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 .

IEEE/The Open Group                2017                   GETHOSTNAME(3P)

Pages that refer to this page: unistd.h(0p)

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